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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2109670741600035 | 9.2825e-09 | |
| a | 2.619785508188292 | 6.3605e-09 | au |
| q | 2.06709702459903 | 2.3589e-08 | au |
| i | 10.30047324620092 | 6.8235e-07 | deg |
| node | 29.46518848209383 | 6.3596e-06 | deg |
| peri | 19.50618630646677 | 8.8596e-06 | deg |
| M | 147.203671762877 | 5.2084e-06 | deg |
| tp | 2458763.194627648945
(2019-Oct-06.69462765) | 2.1572e-05 | TDB |
| period | 1548.806027159684
4.24 | 5.6405e-06
1.544e-08 | d
yr |
| n | .2324371119992313 | 8.465e-10 | deg/d |
| Q | 3.172473991777554 | 7.7024e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.42 |
|
n/a |
MPCxxxxx |
IRAS observations used: 2 |
| diameter |
diameter |
25.784 |
km |
0.174 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
5.5362 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Klinglesmith III, D.K. (2017) Minor Planet Bull. 44, 345-348.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Franco, L.; Marchini, A.; Scarfi, G.; Bacci, P.; et al. (2020) Minor Planet Bull. 47, 144-147.] |
| geometric albedo |
albedo |
0.221 |
|
0.032 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.869 |
|
0.024 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=10.21 deg. |
| U-B |
UB |
0.453 |
|
0.043 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=10.21 deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
| 459 Signe (A900 UH) Discovered 1900-Oct-22 by Wolf, M. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A900 UH = 1934 VH = 1938 SE1 = A917 TF = A921 RD |
|
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