| (2012 XL55) |
| Classification: Apollo [NEO] SPK-ID: 3619730 |
[ 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 2456270.5 (2012-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .6442146708711701 | 0.0020813 | |
| a | 1.715791287155635 | 0.0078335 | au |
| q | .6104533678170462 | 0.0007841 | au |
| i | 2.380511260588759 | 0.0079521 | deg |
| node | 77.17253593180192 | 0.0019474 | deg |
| peri | 90.12312889885771 | 0.0073362 | deg |
| M | 338.0119948275913 | 0.18146 | deg |
| tp | 2456320.639320472317
(2013-Jan-28.13932047) | 0.070423 | TDB |
| period | 820.9091833707616
2.25 | 5.6218
0.01539 | d
yr |
| n | .4385381565860823 | 0.0030032 | deg/d |
| Q | 2.821129206494223 | 0.01288 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
4.331760824946202E-6 |
-1.631799680286487E-6 |
-.0001465679335891256 |
-4.052155743114964E-6 |
1.490896190788894E-5 |
1.654846461160565E-5 |
| q |
-1.631799680286487E-6 |
6.148150626520093E-7 |
5.520933783674699E-5 |
1.526823100046717E-6 |
-5.63263199833281E-6 |
-6.234971109427436E-6 |
| tp |
-.0001465679335891256 |
5.520933783674699E-5 |
.004959347036898009 |
.0001370951789600331 |
-.0005038927860919139 |
-.0005598912002455832 |
| node |
-4.052155743114964E-6 |
1.526823100046717E-6 |
.0001370951789600331 |
3.792423300561555E-6 |
-1.400131364562829E-5 |
-1.548425167761933E-5 |
| peri |
1.490896190788894E-5 |
-5.63263199833281E-6 |
-.0005038927860919139 |
-1.400131364562829E-5 |
5.381928952189034E-5 |
5.712034566716557E-5 |
| i |
1.654846461160565E-5 |
-6.234971109427436E-6 |
-.0005598912002455832 |
-1.548425167761933E-5 |
5.712034566716557E-5 |
6.323589266618771E-5 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
27.0 |
|
n/a |
MPO247320 |
|
|
[ 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 |
| 2012-Dec-11 11:12 |
< 00:01 |
Earth |
0.0108401060135437 |
0.0107344617996488 |
0.0109457473038747 |
18.6726112053623 |
18.6594429895553 |
2456272.966321606 |
0.228811870688768 |
5260.4867323033 |
10.799842761489 |
0.123509688958549 |
242.638730617486 |
T |
5 |
CATAB v2.0g-lin.ifort 2021-Apr-15 07:19:34 |
2021-Apr-15 07:19 |
| 2089-Nov-30 07:06 |
4_04:34 |
Earth |
0.226034949262667 |
0.213157207890842 |
0.238927794987205 |
25.7774589027821 |
25.7770016035085 |
2484385.795916978 |
6034.28394119851 |
649110.395274826 |
627.631155281545 |
-8.15636308606845 |
7226.96386091325 |
T |
5 |
CATAB v2.0g-lin.ifort 2021-Apr-15 07:19:34 |
2021-Apr-15 07:19 |
|
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