J/A+A/565/A56 Astrometric asteroid masses (Goffin, 2014)
Astrometric asteroid masses: a simultaneous determination.
Goffin E.
<Astron. Astrophys. 565, A56 (2014)>
=2014A&A...565A..56G 2014A&A...565A..56G
ADC_Keywords: Minor planets
Keywords: astrometry - celestial mechanics - minor planets, asteroids: general
Abstract:
Using over 89 million astrometric observations of 349,737 numbered
minor planets, an attempt was made to determine the masses of 230 of
them by simultaneously solving for corrections to all orbital elements
and the masses. For 132 minor planets an acceptable result was
obtained, 49 of which appear to be new.
Description:
The asteroid masses and associated standard deviations in table5.dat
resulted from the main calculation described in the paper, which was
started using assumed values for the masses.
From these results the significance (= mass divided by its standard
deviation) and, using the given equivalent diameter, the bulk density
The results (masses + st. dev.) from iterations starting from zero
masses and from masses twice their assumed values are also included.
A literature overview for the masses in table5.dat is given in
table6.dat
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table5.dat 61 132 Asteroid masses obtained
table6.dat 38 367 Overview of mass determinations for the
asteroids in table5.dat
refs.dat 163 37 References
--------------------------------------------------------------------------------
See also:
B/astorb : Orbits of Minor Planets (Bowell+ 2014)
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Seq Minor planet number
6- 21 A16 --- Name Minor planet name
23- 27 F5.3 10-10Msun M Mass from main calculation
29- 33 F5.3 10-10Msun e_M Standard deviation of Mass
35- 40 F6.1 --- Signi [1.6/1562] Significance of M
42- 45 F4.1 10-13Msun Dm0 Mass difference when starting from masses
equal to zero
47- 50 F4.1 10-13Msun Dm2 Mass difference when starting from masses
twice their assumed values
52- 54 I3 km Diam Assumed equivalent diameter
56 A1 --- Cl [B-X] Taxonomic class
58- 61 F4.2 g/cm3 Dens Resulting bulk density
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Seq Minor planet number
6- 21 A16 --- Name Minor planet name
23- 27 F5.3 10-10Msun M Mass from main calculation
29- 33 F5.3 10-10Msun e_M ? Standard deviation of M
35 A1 --- Type [aps] Type of observations used (1)
37- 38 I2 --- Ref Reference, in refs.dat file
--------------------------------------------------------------------------------
Note (1): Observations code as follows:
a = astrometric observations
p = planetary ephemerides
s = satellite(s) or multiple asteroid
--------------------------------------------------------------------------------
Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode Simbad bibcode
24- 47 A24 --- Aut Author's name
49-163 A115 --- Com Comments
--------------------------------------------------------------------------------
Acknowledgements:
Edwin Goffin, edwin.goffin(at)skynet.be
(End) Patricia Vannier [CDS] 15-Apr-2014