I/344 The URAT Parallax Catalog (UPC). Update 2018 (Finch+, 2018)
The URAT Parallax Catalog (UPC). Update 2018
Finch C.T., Zacharias N., Jao W.-c.
<Astron. J., 155, 176 (2018)>
=2018yCat.1344....0F 2018yCat.1344....0F
=2018AJ....155..176F 2018AJ....155..176F
ADC_Keywords: Surveys ; Positional data ; Parallaxes, trigonometric ;
Proper motions
Keywords: parallaxes - solar neighborhood - stars: distances -
stars: statistics - surveys - astrometry - photometry
Description:
United States Naval Observatory (USNO) Robotic Astrometric
Telescope (URAT) Parallax Catalog south (UPCs) and north (UPCn).
These data are based on the accepted paper for the Astronomical
Journal (2018) by C. Finch, N. Zacharias, and W.-C. Jao, "URAT south
parallax results: discovery of new nearby stars" (2018AJ....155..176F 2018AJ....155..176F).
The southern data are new, while the northern data contain a subset of
the previously published UPC catalog after applying the more stringent
selection criteria of the south data and supplementing the data with
columns of the southern data.
The previously published URAT Parallax Catalog (UPC) paper is:
C. Finch and N. Zacharias (2016AJ....151..160F 2016AJ....151..160F, Cat. J/AJ/151/160)
(arXiv:1604.06739).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
upcn.dat 168 729 URAT Parallax Catalog north (table 6)
upcs.dat 170 916 URAT Parallax Catalog south (table 5)
table47.dat 151 23 URAT South and North Common Proper Motion Systems
(tables 4 (South) and 7 (North))
--------------------------------------------------------------------------------
See also:
I/329 : URAT1 Catalog (Zacharias+ 2015)
I/333 : URAT Parallax Catalog (UPC) (Finch+, 2016)
J/AJ/151/160 : 1103 parallaxes and proper motions from URAT (Finch+, 2016)
Byte-by-byte Description of file: upcn.dat upcs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 24 A24 --- Name Designation of object
26- 36 F11.7 deg RAdeg Right Ascension (ICRS) at epoch 2015.5
38- 48 F11.7 deg DEdeg Declination (ICRS) at epoch 2015.5
50- 54 F5.2 mag Umag URAT bandpass apparent magnitude
56- 57 A2 --- SpType Estimated spectral type
59- 63 F5.2 yr EpSpan Total epoch span of observations
65- 67 I3 --- Obs Total number of observations
69- 70 I2 --- Rej Number of observations rejected
72- 76 F5.1 mas plx Absolute parallax
78- 81 F4.1 mas e_plx Formal standard error of parallax
83- 85 F3.1 mas plxcor Parallax correction (absolute - relative)
87- 93 F7.1 mas/yr pmRA Proper motion along RA * cos(Dec)
95- 98 F4.1 mas/yr e_pmRA Formal standard error of pmRA
100-105 F6.1 mas/yr pmDE Proper motion along Dec
107-110 F4.1 mas/yr e_pmDE Formal standard error of pmDE
112-117 F6.3 mag Jmag 2MASS apparent J band magnitude
119-124 F6.3 mag Hmag ? 2MASS apparent H band magnitude (1)
126-131 F6.3 mag Ksmag 2MASS apparent Ks band magnitude
133-138 F6.3 mag Bmag ? APASS apparent B band magnitude (1)
140-145 F6.3 mag Vmag ? APASS apparent V band magnitude (1)
147-152 F6.3 mag gmag ? APASS apparent g band magnitude (1)
154-159 F6.3 mag rmag ? APASS apparent r band magnitude (1)
161-166 F6.3 mag imag ? APASS apparent i band magnitude (1)
168-170 A3 --- Note Additional note code (2)
--------------------------------------------------------------------------------
Note (1): some magnitudes are not available and there are blank entries in
those tables for those columns.
Note (2): Explanation of note code as follows:
a = parallaxes from both the URAT north and south;
b = a common proper motion companion, see Table 4, or 7 in paper
c = new young star candidate;
d = known young star
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table47.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- NS [N/S] North or South
3- 25 A23 --- Name1 Name of primary
27- 31 F5.2 mas plx1 Primary absolute proper motion
32- 36 F5.2 mas e_plx1 rms uncertainty on PLX1
38- 44 F7.2 mas/yr pmRA1 Primary proper motion along RA, pmRA*cosDE
46- 49 F4.2 mas/yr e_pmRA1 rms uncertainty on pmRA1
51- 57 F7.2 mas/yr pmDE1 Primary proper motion along DE
59- 62 F4.2 mas/yr e_pmDE1 rms uncertainty on pmDE1
64- 86 A23 --- Name2 Name of secondary
88- 92 F5.2 mas plx2 Secondary absolute proper motion
93- 97 F5.2 mas e_plx2 rms uncertainty on PLX2
99-106 F8.3 mas/yr pmRA2 Secondary proper motion along RA, pmRA*cosDE
107-112 F6.3 mas/yr e_pmRA2 rms uncertainty on pmRA2
114-121 F8.3 mas/yr pmDE2 Secondary proper motion along DE
123-127 F5.3 mas/yr e_pmDE2 rms uncertainty on pmDE2
129-134 F6.2 arcsec Sep Separation
136-141 F6.2 deg theta Position angle
142 A1 --- Note [abc] Notes (1)
--------------------------------------------------------------------------------
Note (1): Notes as follows:
a = CPD-66 3810A astrometric data from van Leeuwen (2007, Cat. I/311)
b = CCDM J22441+4030B astrometric data from Gaia Collaboration et al.
(2016, Cat. I/337)
c = HD 102634 astrometric data from van Leeuwen (2007, Cat. I/311)
--------------------------------------------------------------------------------
Acknowledgements:
Norbert Zacharias, norbert.zacharias(at)navy.mil
(End) Patricia Vannier [CDS] 05-Mar-2018