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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.
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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1759198576435197 | 2.6567e-08 | |
| a | 2.585127149967032 | 9.45e-09 | au |
| q | 2.130351949754434 | 6.8432e-08 | au |
| i | 7.180212230590606 | 4.5372e-06 | deg |
| node | 207.1425588050143 | 3.1884e-05 | deg |
| peri | 224.1588430832316 | 3.6634e-05 | deg |
| M | 81.30626626266357 | 1.7327e-05 | deg |
| tp | 2458657.619484037700
(2019-Jun-23.11948404) | 7.2278e-05 | TDB |
| period | 1518.173093174136
4.16 | 8.3246e-06
2.279e-08 | d
yr |
| n | .2371271112751223 | 1.3002e-09 | deg/d |
| Q | 3.03990235017963 | 1.1112e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.3 |
|
n/a |
PDS3 (MPC 33669) |
|
| diameter |
diameter |
3.746 |
km |
0.146 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
9.219 |
h |
n/a |
LCDB (Rev. 2019-August); 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 |
0.263 |
|
0.040 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 9994 Grotius | Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. |
| The works Mare Liberum (1609; "Free Access to the Ocean for all nations") and De Jure Belli ac Pacis (1625; "On the Law of War and Peace") of the Dutch statesman Hugo Grotius (Huig de Groot, 1583-1645) laid the foundation for modern international law. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20001111/MPCPages.arc | Last Updated: 2013-03-29 |
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