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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 26 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1759198560334745 | 2.6414e-08 | |
| a | 2.585127150526182 | 9.394e-09 | au |
| q | 2.13035195437739 | 6.7938e-08 | au |
| i | 7.18021219463305 | 4.5278e-06 | deg |
| node | 207.1425585553629 | 3.1781e-05 | deg |
| peri | 224.1588436362939 | 3.6533e-05 | deg |
| M | 81.30626569544603 | 1.7291e-05 | deg |
| tp | 2458657.619486318495
(2019-Jun-23.11948632) | 7.2136e-05 | TDB |
| period | 1518.173093666696
4.16 | 8.2753e-06
2.266e-08 | d
yr |
| n | .2371271111981882 | 1.2925e-09 | deg/d |
| Q | 3.039902346674974 | 1.1047e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2457122.5 (2015-Apr-10.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1740585245860247 | 2.6238e-08 | |
| q | 2.135655125794271 | 6.7253e-08 | au |
| tp | 2457139.561433457735
(2015-Apr-27.06143346) | 7.0474e-05 | TDB |
| node | 207.1892825990653 | 3.1826e-05 | deg |
| peri | 224.3360942935625 | 3.6687e-05 | deg |
| i | 7.172366677727625 | 4.5265e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
6.884448394523803E-16 |
-1.753164637065134E-15 |
-4.301228848940035E-13 |
2.583544088720221E-15 |
-1.283209394509106E-13 |
1.862049445012343E-17 |
| q |
-1.753164637065134E-15 |
4.522948208567195E-15 |
1.262152683191823E-12 |
-4.933554282901562E-15 |
3.672460891330821E-13 |
-4.706922415559673E-16 |
| tp |
-4.301228848940035E-13 |
1.262152683191823E-12 |
4.966636005995272E-9 |
-3.060964651325578E-12 |
1.304279827484407E-9 |
-5.070072139546495E-12 |
| node |
2.583544088720221E-15 |
-4.933554282901562E-15 |
-3.060964651325578E-12 |
1.012899320744227E-9 |
-1.005363179106099E-9 |
-7.614805042166133E-11 |
| peri |
-1.283209394509106E-13 |
3.672460891330821E-13 |
1.304279827484407E-9 |
-1.005363179106099E-9 |
1.345900744192792E-9 |
7.424486281742355E-11 |
| i |
1.862049445012343E-17 |
-4.706922415559673E-16 |
-5.070072139546495E-12 |
-7.614805042166133E-11 |
7.424486281742355E-11 |
2.048941132636157E-11 |
|
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. 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 |
0.263 |
|
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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