| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
3.34 |
mag |
n/a |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 15 |
| magnitude slope |
G |
0.12 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
| diameter |
diameter |
952.4 |
km |
n/a |
Thomas et al. (2005) Nature v437:pp224-226 |
from a sphere with volume equivalent to an oblate spheroid with semi-axes a=487.3, b=454.7 km |
| extent |
extent |
974.6 x 909.4 |
km |
3.6 x 3.2 |
Thomas et al. (2005) Nature v437:pp224-226 |
oblate spheroid (semi-axes: a=487.3 +/- 1.8; b=454.7 +/- 1.6 km) |
| GM |
GM |
63.2 |
km^3/s^2 |
n/a |
JPL IOM 312.F01-006 |
|
| rotation period |
rot_per |
9.074170 |
h |
n/a |
Asteroid Lightcurve DataBase (Rev. 2013-May-01) |
sidereal period (not synodic)
Published Reference List:
[Ahmad, I.I. (1954) Astrophys. J. 120, 551-560.]
[Taylor, R.C.; Gehrels, T.; Capen, R.C. (1976) Astron. J. 81, 778-786.]
[Tedesco, E.F.; Taylor, R.C.; Drummond, J.; Harwood, D.; et al. (1983) Icarus 54, 23-29.]
[Chamberlain, M.A.; Sykes, M.V.; Esquerdo, G.A. (2007) Icarus 188, 451-456.] |
| geometric albedo |
albedo |
0.090 |
|
0.003 |
Li et al. (2006) Icarus v182:pp143-160 |
V-band geometric albedo |
| B-V |
BV |
.713 |
mag |
.014 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 |
#obs=52; phase (min.=1.47, mean=11.85, max.=22.59) deg. |
| U-B |
UB |
.426 |
mag |
.026 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 |
#obs=52; phase (min.=1.47, mean=12.16, max.=22.59) deg. |
| Tholen spectral type |
spec_T |
G |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
