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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .08996209873380415 | 3.0234e-08 | |
| a | 2.228918657286646 | 4.7463e-09 | au |
| q | 2.028400456970207 | 6.7105e-08 | au |
| i | 2.393097556947268 | 3.2633e-06 | deg |
| node | 141.1653803034318 | 6.9633e-05 | deg |
| peri | 7.759723705849597 | 7.1798e-05 | deg |
| M | 155.7625148381808 | 1.9006e-05 | deg |
| tp | 2458474.603590435318
(2018-Dec-22.10359044) | 6.3438e-05 | TDB |
| period | 1215.457439422891
3.33 | 3.8823e-06
1.063e-08 | d
yr |
| n | .296184784693844 | 9.4605e-10 | deg/d |
| Q | 2.429436857603085 | 5.1733e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.5 |
|
n/a |
MPO473773 |
IRAS observations used: 2 |
| diameter |
diameter |
12.642 |
km |
0.130 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
9.341 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Robinson, L. (2011) http://btboar.tripod.com/lightcurves/]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
| geometric albedo |
albedo |
0.335 |
|
0.034 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.859 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=5.53 deg. |
| U-B |
UB |
0.482 |
|
0.048 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=5.53 deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
| 851 Zeissia (A916 GL) Discovered 1916-Apr-02 by Belyavskij, S. at Simeis |
| Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A916 GL = 1950 NS1 = 1950 PA1 |
|
|
