[ hide orbit diagram ]
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .01055322131509748 | 3.0936e-08 | |
| a | 2.814191519347632 | 8.7188e-09 | au |
| q | 2.784492733420886 | 8.5124e-08 | au |
| i | 2.877372115669549 | 3.9777e-06 | deg |
| node | 226.7091775218246 | 6.2011e-05 | deg |
| peri | 234.5515209240015 | 0.00019411 | deg |
| M | 133.0044222914378 | 0.00018416 | deg |
| tp | 2458363.422184571410
(2018-Sep-01.92218457) | 0.00088172 | TDB |
| period | 1724.363818909325
4.72 | 8.0135e-06
2.194e-08 | d
yr |
| n | .2087726476583712 | 9.7022e-10 | deg/d |
| Q | 2.843890305274377 | 8.8108e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.0 |
|
n/a |
MPO473771 |
IRAS observations used: 20 |
| diameter |
diameter |
37.622 |
km |
0.409 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
22.340 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Bartczak, P.; et al. (2016) Proc. Polish Ast. Soc. 123, 51-57.] |
| geometric albedo |
albedo |
0.092 |
|
0.034 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.782 |
|
0.056 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=2.05 deg. |
| U-B |
UB |
0.427 |
|
0.087 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=2.05 deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
| SMASSII spectral type |
spec_B |
S |
|
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) |
|
| 673 Edda (A908 SG) Discovered 1908-Sep-20 by Metcalf, J. H. at Taunton |
| Independent discovery Sept. 21 by A. Kopff, Heidelberg, was announced first. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A908 SG = 1948 BF = 1976 AK |
|
|
