1  Planet 9. Apr. 26 is date of first measurement.
  2  Planet 20. Independent discovery the next night by J. Chacornac,
  2  Marseille, was announced first.
  3  Planet 50. Independent discovery Oct. 19 by R. Luther, Dusseldorf, was
  3  announced first.
  4  Planet 66. Apr. 10, given by some authorities, is the civil date.
  5  Planet 69. Apr. 29 is date of first measurement.
  6  Planet 71. Aug. 14 is date of first measurement.
  7  Planet 80. May 3 is date of first measurement.
  8  Planet 100. Independent discovery July 18 by C. Wolf, Paris, was announced
  8  first.
  9  Planets discovered by Prosper and Paul Henry.  In their cooperative
  9  program it will probably never be known which of the Henry brothers
  9  discovered which planet.  With strict impartiality, these discoveries were
  9  announced as having been made alternatively by Prosper and by Paul.
 10  Planet 154. Initial announcement gave Nov. 6.
 11  Planet 179. Initial announcement gave Nov. 12.
 12  Planet 220. Initial announcement gave May 18.
 13  Planet 264. Discovery possibly as early as Dec. l7.
 14  Planet 268. June 9 is date of first measurement.
 15  Planet 323. Dec. 20 observation seems to be a prediscovery.
 16  Planet 330. This planet was alleged to have been discovered 1892 Mar. 18
 16  by M. Wolf at Heidelberg with the provisional designation 1892 X.  Only
 16  one more position Mar. 20 was obtained, and from the resulting circular
 16  elements this object was never observed again.  In 1982 R. M. West, C.
 16  Madsen, and L. D. Schmadel showed that these observations refer to
 16  galactic stars, and that 1892 X does not exist.  Later in that year the
 16  designation 330 Adalberta was assigned to planet A910 CB, which had
 16  earlier been incorrectly identified with 783 Nora, and now newly numbered.
 17  Planet 433. Independent discovery earlier the same night by A. Charlois,
 17  Nice.
 18  Planet 457. Discovery telegram gave only Sept. 16 observation.
 19  Planet 468. Already photographed on Jan. 13; it is not clear whether this
 19  should be regarded as a prediscovery image.
 20  Planet 47l. May 18 prediscovery observation by L. Carnera is in error.
 21  Planets 525, 1171. The original planet 525 Adelaide, discovered 1904 Mar.
 21  14 by M. Wolf, Heidelberg, was observed only during the discovery
 21  opposition. In 1958 A. Patry, Nice, found that this object is identical
 21  with planet 1171 Rusthawelia, discovered 1930 Oct. 3 by S. Arend, Uccle.
 21  This planet retains the latter designation 1171 Rusthawelia.  The older
 21  designation 525 Adelaide has been given to a minor planet discovered 1908
 21  Oct. 21 by J. H. Metcalf and newly catalogued.
 22  Planet 535. May 9, given by some authorities, is erroneous.
 23  Planet 602. Independent discovery Feb. 22 by A. Kopff, Heidelberg, was
 23  announced first.
 24  Planet 673. Independent discovery Sept. 21 by A. Kopff, Heidelberg, was
 24  announced first.
 25  Planet 694. Independent discovery Nov. 9 by J. Helffrich, Heidelberg, was
 25  announced first.
 26  Planets 699, 700. June 3, given by some authorities, is erroneous.
 27  Planets 715, 933. The original planet 715 Transvaalia, discovered 1911
 27  Apr. 22 by H. E. Wood, was recovered on 1920 Apr. 23 as 1920 GZ and given
 27  the designation 933 Susi.  The identity was discovered in 1928 and the
 27  older designation 715 Transvaalia was retained. In the same year the
 27  designation 933 Susi was assigned to a newly-discovered planet.
 28  Planets 758, 790. and K. Van der Spuy.
 29  Planet 760. Independent discovery earlier the same night by G. Neujmin,
 29  Simeis.
 30  Planet 793. Independent discovery Apr. 17 by J. H. Metcalf, Taunton, was
 30  announced first.
 31  Planet 812. Independent discovery Sept. 11 by M. Wolf, Heidelberg, was
 31  announced first.
 32  Planet 824. Independent discovery Apr. 1 by M. Wolf, Heidelberg, was
 32  announced first.
 33  Planet 825. Independent discovery Apr. 3 by M. Wolf, Heidelberg, was
 33  announced first.
 34  Planet 829. Independent discovery Aug. 31 by M. Wolf, Heidelberg, was
 34  announced first.
 35  Planet 830. Independent discovery Sept. 3 by M. Wolf, Heidelberg, was
 35  announced first.
 36  Planet 848. Independent discovery Sept. 9 by M. Wolf, Heidelberg, was
 36  announced first.
 37  Planets discovered at Simeis during the First World War while Simeis was
 37  not in communication with the Rechen-Institut for long periods of time
 37  were given provisional designations containing the Greek letter SIGMA.
 37  These are here abbreviated S.
 38  Planet 855. Independent discovery Apr. 28 by M. Wolf, Heidelberg, was
 38  announced first.
 39  Planet 859. Prediscovery observation Sept. 20 by F. Gonnessiat, Algiers.
 40  Planets 864, 1078. In 1958 A. Patry, Nice, found that planet 864 Aase,
 40  discovered 1917 Feb. 13 by M. Wolf, Heidelberg, is identical with 1078
 40  Mentha, discovered 1926 Dec. 7 by K. Reinmuth, Heidelberg.  This object
 40  retains the latter designation 1078 Mentha.  In 1974 the designation 864
 40  Aase was assigned to planet 1921 KE, discovered 1921 Sept. 30 by K.
 40  Reinmuth and newly catalogued.
 41  Planet 869. Independent discovery May 10 by M. Wolf, Heidelberg, was
 41  announced first.
 42  Planet 878. and H. Shapley
 43  Planet 882. Independent discovery Aug. 18 by M. Wolf, Heidelberg, was
 43  announced first.
 44  Planet 883. Independent discovery earlier the same night by R. Schorr,
 44  Bergedorf.  Both Wolf and Schorr initially thought the object was Encke's
 44  Comet, and Wolf was the first to realize that it was not.
 45  Planet 885. Independent discovery Sept. 26 by M. Wolf, Heidelberg, was
 45  announced first.
 46  Planet 886. Independent discovery Nov. 12 by M. Harwood, Nantucket.
 47  Planet 887. The Feb. 3 observation given by some authorities is a
 47  rediscovery.
 48  Planet 931. and B. Jekhovsky.  Independent discovery Mar. 21 by K.
 48  Reinmuth, Heidelberg, was announced first.
 49  Planet 942. Independent discovery later the same night by A. Schwassmann,
 49  Bergedorf.
 50  Planet 943. Oct. 12 observation by A. Schwassmann, Bergedorf, was
 50  apparently a prediscovery.
 51  Planet 969. Independent discovery Nov. 25 by K. Reinmuth, Heidelberg, was
 51  announced first.
 52  Planet 978. Independent discovery May 30 by M. Wolf, Heidelberg, was
 52  announced first.
 53  Planet 990. Independent discovery Dec. 14 by M. Wolf, Heidelberg, was
 53  announced first.
 54  Planet 1004. Independent discovery Sept. 13 by K. Reinmuth, Heidelberg,
 54  was announced first.
 55  Planet 1033. Independent discovery Sept. 5 by S. Belyavskij, Simeis, was
 55  announced first.
 56  Planet 1051. Sept. 15, given by some authorities, refers to local mean
 56  time.
 57  Planet 1057. Independent discovery Aug. 19 by K. Reinmuth, Heidelberg, was
 57  announced first.
 58  Planet 1067. Sept. 10, given by some authorities, refers to the local
 58  meridian.
 59  Planet 1090. Independent discovery Feb. 24 by K. Reinmuth, Heidelberg, was
 59  announced first.
 60  Planets 1095, 1449. In 1966 C. Bardwell, Cincinnati, discovered that minor
 60  planet 1928 DC, discovered 1928 Feb. 24 by K. Reinmuth and originally
 60  designated 1095 Tulipa, is identical with planet 1449 Virtanen, discovered
 60  by Y. Vaisala, Turku, 1938 Feb. 20.  This planet retains the latter
 60  designation 1449 Virtanen.  The designation 1095 Tulipa has been
 60  reassigned to planet 1926 GS, discovered 1926 Apr. 14 by K. Reinmuth and
 60  newly catalogued.
 61  Planet 1098. Independent discovery Sept. 9 by M. Wolf, Heidelberg, was
 61  announced first.
 62  Planet 1099. Independent discovery the next night by M. Wolf, Heidelberg,
 62  was announced first.
 63  Planet 1113. Independent discovery Aug. 25 by M. Wolf, Heidelberg, was
 63  announced first.
 64  Planet 1118. Independent discovery Aug. 30 by K. Reinmuth, Heidelberg, was
 64  announced first.
 65  Planets 1125 and 3789.  The original planet 1125 China was discovered 1928
 65  Oct. 25 as 1928 UF by Y. C. Chang at Williams Bay and not observed again
 65  for many years.  It was believed to have been recovered as 1957 UN1 on
 65  1957 Oct. 30 by Chang at Nanking, but this identification was found to be
 65  incorrect.  In agreement with the discoverer, the designation 1125 China
 65  was assigned to planet 1957 UN1.  In 1986 C. M. Bardwell and S. Nakano
 65  independently identified planet 1986 QK1 with 1928 UF, and subsequently
 65  the permanent number 3789 was assigned to 1928 UF = 1986 QK1.
 66  Planet 1137. Independent discovery Nov. 21 by K. Reinmuth, Heidelberg, was
 66  announced first.
 67  Planet 1164. Independent discovery Mar. 20 by W. Baade, Bergedorf, was
 67  announced first.
 68  Planet 1166. Independent discovery June 29 by K. Reinmuth, Heidelberg, was
 68  announced first.
 69  Planet 1192. and A. Wachmann.
 70  Planet 1202. Independent discovery Sept. 15 by K. Reinmuth, Heidelberg,
 70  was announced first.
 71  Planet 1223. Independent discovery Oct. 11 by F. Rigaux, Uccle, was
 71  announced first.
 72  Planet 1224. Independent discovery Sept. 17 by E. Delporte, Uccle, was
 72  announced first.
 73  Planet 1226. Some authorities give Apr. 23
 74  Planet 1243. Subsequently reported as discovered on Apr. 4 by E. L.
 74  Johnson.
 75  Planet 1246. Subsequently reported as discovered on July 4.
 76  Planet 1266. Independent discovery Jan. 24 by G. Neujmin, Simeis, was
 76  announced first.
 77  Planet 1267. Independent discovery Apr. 28 by K. Reinmuth, Heidelberg, was
 77  announced first.
 78  Planet 1270. Independent discovery Dec. 20 by M. Wolf, Heideberg, was
 78  announced first.
 79  Planet 1310. and A. Wachmann.
 80  Planets 787 and 1317. In 1938 G. Neujmin found that planet 1317 = 1934 FD,
 80  discovered 1934 Mar. 19 by C. Jackson, Johannesburg (UO), is identical
 80  with 787 Moskva, discovered 1914 Apr. 20 by Neujmin. The number 1317 was
 80  later given to planet 1935 RC.
 81  Planet 1323. Prediscovery observations exist as early as May 8.  The May
 81  19 discovery date quoted by some authorities in in error.
 82  Planet 1335. Independent discovery Sept. 13 by E. Delporte, Uccle, was
 82  announced first.
 83  Planet 1362. Discovery is clearly July 31.  Preliminary designation is
 83  associated with the Aug. 27 observation.
 84  Planet l363. Preliminary designation is assigned to the Sept. 3
 84  observation.  Discovery Aug. 30 was initially, and incorrectly, attributed
 84  to planet 1231.
 85  Planet 1364. Discovery is clearly Nov. l8.  By error the preliminary
 85  designation 1935 VB instead of a W designation was assigned.
 86  Planet 1367. Independent discovery July 6 by K. Reinmuth, Heidelberg, was
 86  announced first.
 87  Planet 1379. Independent discovery later the same night by P. Djurkovic,
 87  Uccle, was announced first.
 88  Planet 1386. Independent discovery Aug. 2 by E. Delporte, Uccle, was
 88  announced first.
 89  Planet 1390. Practically simultaneous independent discovery by C. Jackson,
 89  Johannesburg (UO).
 90  Planet 1403. Provisional designation is associated with an independent
 90  discovery Aug. l7 by K. Reinmuth, Heidelberg, which was announced first.
 91  Planet 1436. The provisional designation was applied to the Dec. 20
 91  observation, although discovery is clearly Dec. 11.  The Dec. 11
 91  observation was originally attributed to planet 803.
 92  Planet 1453. Confirmation Mar. 23, shortly after an independent discovery
 92  by G. Neujmin, Simeis.
 93  Planet 1459. Independent discovery Nov. 6 by A. Patry, Nice, was
 93  announced first.
 94  Planet 1468. Independent discovery Aug. 2 by L. Boyer, Algiers, was
 94  announced first.
 95  Planet 1481. Independent discovery Feb. 22 by Y. Vaisala, Turku, was
 95  announced first
 96  Planet 1482. Independent discovery Feb. 24 by Y. Vaisala, Turku, was
 96  announced first.
 97  Planet 1491. Discovery is clearly Feb. 23.  By error the provisional
 97  designation 1938 EJ rather than a D designation was assigned.
 98  Planet 1508. Independent discovery Oct. 30, designated 1938 UO, by G.
 98  Kulin, Budapest.
 99  Planet 1518. Independent discovery Oct. 21 by E. Delporte, Uccle, was
 99  announced first.
100  Planet 1526. Confirmation Oct. 20 by L. Oterma, Turku.
101  Planet 1530. Independent discovery Sept. 18 by E. Delporte, Uccle, was
101  announced first.
102  Planet 1540. Nov. 16 observation seems to be a prediscovery.
103  Planets discovered by the Indiana Asteroid Program, Goethe Link
103  Observatory, University of Indiana.  This program was conceived and
103  directed by F. K. Edmondson, the plates were blinked and measured
103  astrometrically by B. Potter and, following her retirement, by D. Owings,
103  and the photometry was performed under the direction of T. Gehrels.
103  During the years 1947-1967 in which the plates were exposed a large number
103  of people participated in various aspects of the program.
104  Planet 1608. Observation Aug. 25 by C. Rogati, La Plata, should be
104  considered a prediscovery.
105  Planet 1631. Observation 1926 Oct. 5 as 1926 TH by K. Reinmuth,
105  Heidelberg, should be considered a prediscovery.
106  Planet 1674. Provisional designation is associated with an independent
106  discovery Feb. 22 by Y. Vaisala, Turku, which was announced first.  A
106  third independent discovery earlier on Feb. 22 was made by G. Kulin,
106  Budapest.
107  These planets have all been discovered as a result of the Palomar survey
107  of faint minor planets and subsequently identified with planets observed
107  at other oppositions.  In Sept. and Oct. 1960 T. Gehrels exposed 130
107  plates with the 122 cm Schmidt camera at Palomar.  In the following years
107  C. J. van Houten and I. van Houten-Groeneveld measured these plates
107  astrometrically and photometrically at Leiden.  P. Herget, Cincinnati,
107  computed the orbits of the planets found on the NORC computer, Dahlgren,
107  Virginia, USA.
108  Planet 1815. Discovery is clearly Jan. 27, although this object was
108  originally thought to be planet 820.  By error a provisional designation
108  1932 CE1 instead of a B designation was assigned.
109  Planet 1850. Discovery is clearly Mar. 23.  By error a provisional
109  designation 1942 EN rather than an F designation was assigned.
110  Planet 1864. First measurement Mar. 26.
111  Planets 1870-1873, 1877. Planets discovered by C. J. van Houten and I. van
111  Houten-Groeneveld, Leiden, on plates exposed by T. Gehrels in a survey of
111  faint Trojans with the 122 cm Schmidt camera at Palomar.
112  Planet 1886. and R. D. Schaldach.
113  Planets discovered at Oak Ridge Observatory (until 1981 Harvard College's
113  Agassiz Station).  The principal observers are R. E. McCrosky, C.-Y. Shao,
113  G. Schwartz, and J. H. Bulger, with some assistance from others.
114  Planet 1980. and A. A. E. Wallenquist
115  Planet 1989. and R. Podstanicka
116  Planet 1993. on exposures by G. Plouguin and I. Belyaiev
117  Planet 2013. on exposures by J. Petit
118  Planet 2043. The Nov. 12 discovery observation was originally thought to
118  refer to 1936 TG.  By error the provisional designation was changed to
118  1936 TH instead of a V designation.
119  Planets discovered at the Anderson Mesa station, which is operated by the
119  Lowell Observatory.
120  Planet 2099. and E. M. Shoemaker
121  Planet 2104. on plates taken by S. van den Bergh.
122  Planet 2147. Oct. 24 observations should be considered a prediscovery.
123  on plates by E. F. Helin and S. J. Bus.
124  and G. de Sanctis
125  on plates taken by B. A. Skiff at the Anderson Mesa station of the Lowell
125  Observatory.
126  Planets discovered in the course of the U. K. Schmidt-Caltech Asteroid
126  survey.
127  and E. Rangel Netto.
128  and P. Jensen and H. J. Fogh Olsen.
129  Planet 3044. and N. E. Kurochkin at the Sternberg Crimean Station.
130  Planets 3067 and 3511. and L. Zhuravleva.
131  Planet 3101. and J. Wall.
132  Planet 3124. at Steward Observatory's Kitt Peak Station.
133  Planet 3240. on Palomar Schmidt plates taken by E. F. Helin and E.
133  Shoemaker.
134  and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
135  Planet 3432. and T. Urata at Yatsugatake-Kobuchizawa
136  Planets 3489 and 3532. and G. Ojakangas
137  Planet 3546. and V. Ivanova and A. Georgieva
138  Planets 3624 and 5421. and L. Zhuravleva.
139  Planet 3752. and J.-L. Heudier
140  Planets discovered in the course of the Third Trojan Survey by C. J. van
140  Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T.
140  Gehrels.
141  Planet 3815. and W. Wenzel
142  On films taken by S. J. Bus.
143  Planet 3924. on plates taken by C. T. Kowal.
144  Planets 4050 and 5934. and H. Rickman
145  Planet 4264. on films taken by R. H. McNaught.
146  Planets discovered in the course of the Second Trojan Survey by C. J. van
146  Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T.
146  Gehrels.
147  and L. Hansen and P. R. Christensen
148  and V. Shkodrov and V. Ivanova
149  Planets 4525 and 5420. and P. D. Wilder
150  Planet 4724. and J. Schubart on plates taken by N. Richter.
151  Planet 4779. on plates taken by P. Usher.
152  Planet 5143. and E. Shoemaker and D. H. Levy.
153  Planets discovered in the course of the First Trojan Survey by C. J. van
153  Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T.
153  Gehrels.
154  and C. Mikolajczak and R. Coker.
155  Planet 5401. and M. Sugano.
156  Planets 5508, 5513, and 5741. and T. Urata.
157  Planet 5630. on films taken by E. F. Helin et al.
158  Planet 5633. on Palomar Schmidt plates taken by C. T. Kowal.
159  Planet 5722. Discovered at Palomar in the course of the International
159  Near-Earth Asteroid Survey.
160  Planet 5900. and K. Augustesen and H. J. Fogh Olsen.
161  Planets discovered in the course of the Uppsala-ESO Survey of Asteroids
161  and Comets.