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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 124 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1299724276215099 | 1.7043e-08 | |
| a | 2.882399928490063 | 6.0785e-09 | au |
| q | 2.507767412408143 | 4.7862e-08 | au |
| i | 4.97484894782529 | 2.3907e-07 | deg |
| node | 3.057988767146866 | 4.5817e-06 | deg |
| peri | 314.9087576928255 | 8.7865e-06 | deg |
| M | 172.9073418023297 | 1.0303e-05 | deg |
| tp | 2458341.999173081056
(2018-Aug-11.49917308) | 4.97e-05 | TDB |
| period | 1787.433052114944
4.89 | 5.6541e-06
1.548e-08 | d
yr |
| n | .2014061447359034 | 6.371e-10 | deg/d |
| Q | 3.257032444571984 | 6.8685e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
8.18 |
|
n/a |
MPCxxxxx |
IRAS observations used: 20 |
| magnitude slope |
G |
0.16 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
| diameter |
diameter |
168.174 |
km |
1.222 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
13.178 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Debehogne, H. (1979) Messenger 18, 27-28.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Millis, R.L.; Wasserman, L.H.; Bowell, E.; Harris, A.W.; et al. (1989) Icarus 81, 375-385.]
[Chernova, G.P.; Lupishko, D.F.; Shevchenko, V.G.; Kiselev, N.N.; Saljes, R. (1991) Kin. Fiz. Neb. Tel 7, 20-26; Kinematics and Physics of Celestial Bodies 7, 15-21.]
[Michalowski, T. (1996) Icarus 123, 456-462.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 220-222.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 133-135.] |
| geometric albedo |
albedo |
0.082 |
|
0.005 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.665 |
|
0.015 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=7.07, mean=12.75, max.=18.61) deg. |
| U-B |
UB |
0.300 |
|
0.016 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=7.07, mean=12.75, max.=18.61) deg. |
| Tholen spectral type |
spec_T |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
B |
|
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) |
|
| 47 Aglaja (A857 RA) Discovered 1857-Sep-15 by Luther, R. at Dusseldorf |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A857 RA = 1948 EU = 1982 DX2 |
|
|
