[ 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.
[ revert to old Java-based viewer ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .08119512146061153 | 4.0289e-08 | |
| a | 2.212565411821018 | 7.8363e-09 | au |
| q | 2.032915894468663 | 8.8937e-08 | au |
| i | 5.005610403205798 | 3.5441e-06 | deg |
| node | 232.7909932841162 | 4.6997e-05 | deg |
| peri | 311.2286607129427 | 5.1228e-05 | deg |
| M | 325.743028820221 | 2.1111e-05 | deg |
| tp | 2459114.890265194931
(2020-Sep-22.39026519) | 7.0628e-05 | TDB |
| period | 1202.105558429608
3.29 | 6.3863e-06
1.748e-08 | d
yr |
| n | .2994745323948858 | 1.591e-09 | deg/d |
| Q | 2.392214929173374 | 8.4725e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
15.7 |
|
n/a |
MPO445357 |
|
| diameter |
diameter |
1.922 |
km |
0.286 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.363 |
|
0.112 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 12202 (1981 EM13) Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring |
| Reference: 19991123/Numbers.arc | Last Updated: 2004-04-19 |
|
[ 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 |
| 2048-Jan-09 00:01 |
< 00:01 |
Hebe |
0.0322232880699586 |
0.032222668710405 |
0.0322239074331762 |
7.74759165718275 |
7.74759163228151 |
2469084.501032427 |
0.200940893971048 |
190.58660425677 |
30.7514357101867 |
89.1425700950053 |
156711.730856424 |
T |
23 |
CATAB v2.0f-lin.ifort 2020-Feb-22 20:16:34 |
2020-Feb-22 20:16 |
| 2090-Dec-04 08:50 |
< 00:01 |
Iris |
0.0326425324946999 |
0.0326367464299332 |
0.032648319308805 |
6.11629580233006 |
6.11629577353614 |
2484754.868350130 |
0.175774645228683 |
381.09948735937 |
40.3320480103954 |
-41.0804756206171 |
80124.6803189603 |
T |
23 |
CATAB v2.0f-lin.ifort 2020-Feb-22 20:16:34 |
2020-Feb-22 20:16 |
| 2183-Feb-02 21:04 |
< 00:01 |
Iris |
0.0249815157900158 |
0.0249700621896052 |
0.0249929749066276 |
5.79810766041184 |
5.79810762072304 |
2518417.377492001 |
0.166767753258981 |
818.757234647223 |
40.335468587561 |
45.8411680977908 |
66526.4556162364 |
T |
23 |
CATAB v2.0f-lin.ifort 2020-Feb-22 20:16:34 |
2020-Feb-22 20:16 |
|
|
