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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 25 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .09489436356303373 | 3.4046e-08 | |
| a | 2.375731884782688 | 8.6664e-09 | au |
| q | 2.150288319579829 | 8.4113e-08 | au |
| i | 7.902991771635608 | 4.1062e-06 | deg |
| node | 123.2753632410967 | 2.9194e-05 | deg |
| peri | 299.4865249427523 | 3.9059e-05 | deg |
| M | 358.343980520225 | 2.6497e-05 | deg |
| tp | 2459006.652583363204
(2020-Jun-06.15258336) | 9.845e-05 | TDB |
| period | 1337.502389195472
3.66 | 7.3186e-06
2.004e-08 | d
yr |
| n | .2691583977031589 | 1.4728e-09 | deg/d |
| Q | 2.601175449985548 | 9.4888e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.7 |
|
n/a |
MPO256980 |
|
| diameter |
diameter |
2.426 |
km |
0.753 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
10.532 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] |
| geometric albedo |
albedo |
0.396 |
|
0.194 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 15860 Siráň | Discovered 1996 Apr. 20 by A. Galád and D. Kalmančok at Modra. |
| Slovak geophysicist Gustáv Siráň (1934-2000) was a professor at Comenius University, Bratislava. From 1981 to 1989 he was head of the department of astronomy, geophysics and meteorology, and during this time the Astronomical and Geophysical Observatory in Modra was built. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20010309/MPCPages.arc | Last Updated: 2009-05-11 |
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