[ hide orbit diagram ]
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 31 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1751206547106756 | 3.8641e-08 | |
| a | 2.232526470081022 | 7.4218e-09 | au |
| q | 1.84156497298152 | 8.5228e-08 | au |
| i | 3.301810591205045 | 4.2664e-06 | deg |
| node | 343.3900056413749 | 7.5337e-05 | deg |
| peri | 323.9293353417538 | 7.6963e-05 | deg |
| M | 148.3345714823176 | 1.8295e-05 | deg |
| tp | 2458498.465881901576
(2019-Jan-14.96588190) | 6.093e-05 | TDB |
| period | 1218.40971197316
3.34 | 6.0757e-06
1.663e-08 | d
yr |
| n | .2954671129607102 | 1.4734e-09 | deg/d |
| Q | 2.623487967180524 | 8.7215e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.2 |
|
n/a |
MPO279645 |
|
| diameter |
diameter |
3.068 |
km |
0.178 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.392 |
|
0.082 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 12219 Grigor'ev | Discovered 1982 Sept. 19 by L. I. Chernykh at the Crimean Astrophysical Observatory. |
| From 1957 to 1962 Mikhail Grigor'evich Grigor'ev (1917-1981) was chief of the space-vehicle launch site now known as the Plesetsk cosmodrome. Under his leadership and thanks to his strong will this cosmodrome in the Archangel region of Russia became the most active in the world. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20070402/MPCPages.arc | Last Updated: 2007-07-05 |
|
[ hide close-approach data ]
Close-Approach Data ...sorted by Date/Time (TDB)
|
| Date/Time (TDB) |
Time Uncertainty
(days_HH:MM) |
Body |
Nominal Distance (au) |
Minimum Distance (au) |
Maximum Distance (au) |
V-relative (km/s) |
V-infinity (km/s) |
JD (TDB) |
Time Uncertainty (minutes) |
Semi-major axis (km) |
Semi-minor axis (km) |
range-LOV angle (deg) |
N-sigma |
BP |
Orbit Ref. |
Reference |
Modified |
| 1917-Jul-04 21:20 |
< 00:01 |
Hebe |
0.0408900091593271 |
0.0408885401281256 |
0.0408914796533263 |
6.79215897126547 |
6.79215894888174 |
2421414.388625523 |
0.494910221011617 |
437.168409013215 |
32.7377897614025 |
-81.3504957490982 |
184693.942565541 |
T |
31 |
CATAB v2.0f-lin.ifort 2020-Dec-18 02:48:32 |
2020-Dec-18 02:48 |
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