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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1380458048483925 | 1.2148e-08 | |
a | 3.158339163002118 | 1.2769e-08 | au |
q | 2.722343691261292 | 4.2404e-08 | au |
i | 10.10989200880172 | 6.9023e-07 | deg |
node | 230.6041681940335 | 4.1974e-06 | deg |
peri | 115.445269213534 | 8.8733e-06 | deg |
M | 158.5455553216262 | 1.0816e-05 | deg |
tp | 2458297.603133298585 (2018-Jun-28.10313330) | 5.9129e-05 | TDB |
period | 2050.154426298019 5.61 | 1.2433e-05 3.404e-08 | d yr |
n | .1755965284283755 | 1.0649e-09 | deg/d |
Q | 3.594334634742944 | 1.4532e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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[ hide covariance matrix ]
Orbital Elements at Epoch 2456658.5 (2014-Jan-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1342045242151228 | 1.1888e-08 | |
q | 2.735762972793761 | 4.151e-08 | au |
tp | 2456230.696356703480 (2012-Oct-30.19635670) | 5.6644e-05 | TDB |
node | 231.2802699566496 | 4.215e-06 | deg |
peri | 112.5485431527256 | 9.1589e-06 | deg |
i | 10.09961332279102 | 6.8429e-07 | deg |
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| | Orbit Determination Parameters
Additional Information
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Orbit Covariance (6×6)
|
|
e |
q |
tp |
node |
peri |
i |
e |
1.413281706112729E-16 |
-4.764186873414153E-16 |
1.847305021799913E-14 |
-9.890969961029557E-16 |
4.106629892301727E-15 |
-4.411499847183294E-16 |
q |
-4.764186873414153E-16 |
1.723082829942328E-15 |
9.140015797938125E-14 |
3.467794700922639E-15 |
1.73990660689943E-14 |
1.275930353463947E-15 |
tp |
1.847305021799913E-14 |
9.140015797938125E-14 |
3.208558776808624E-9 |
6.070093020984774E-12 |
4.588446814283024E-10 |
-2.854506706724475E-13 |
node |
-9.890969961029557E-16 |
3.467794700922639E-15 |
6.070093020984774E-12 |
1.776620490871011E-11 |
-1.660992641030782E-11 |
-2.27785621437667E-12 |
peri |
4.106629892301727E-15 |
1.73990660689943E-14 |
4.588446814283024E-10 |
-1.660992641030782E-11 |
8.388468816678455E-11 |
2.237977509410156E-12 |
i |
-4.411499847183294E-16 |
1.275930353463947E-15 |
-2.854506706724475E-13 |
-2.27785621437667E-12 |
2.237977509410156E-12 |
4.682509174940643E-13 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
9.77 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
35.741 |
km |
0.602 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
42.61 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Ferrero, A. (2013) Minor Planet Bull. 40, 31-32.] [Stephens, R.D. (2013) Minor Planet Bull. 40, 34-35.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] |
geometric albedo |
albedo |
0.166 |
|
0.047 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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|
979 Ilsewa (A922 MA) Discovered 1922-Jun-29 by Reinmuth, K. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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[ hide close-approach data ]
Close-Approach Data ...sorted by Date/Time (TDB)
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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 |
1919-Sep-08 23:10 |
00:02 |
Jupiter |
1.94896251776082 |
1.94896235020328 |
1.94896268531859 |
2.71726897368267 |
2.55232192040262 |
2422210.465053011 |
1.79315477427055 |
56.2175467770504 |
6.01948056418855 |
-63.5051288788709 |
5572829.30272636 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
1930-Mar-29 02:31 |
00:01 |
Jupiter |
1.95892709654581 |
1.95892681862569 |
1.95892737446705 |
4.29519849420205 |
4.19332183815014 |
2426064.605150069 |
1.43589294150229 |
97.2359636642145 |
7.64601300424421 |
-85.7030371187439 |
11245288.6106952 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
2015-Feb-26 05:31 |
< 00:01 |
Jupiter |
1.97952385466466 |
1.97952372542091 |
1.97952398390841 |
2.19323989453043 |
1.98859677766009 |
2457079.730191900 |
0.0686460094331396 |
8.23637478997009 |
4.67535423615827 |
-83.2997621001014 |
10511025.0372544 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
2025-Aug-26 01:45 |
< 00:01 |
Jupiter |
1.96539105820603 |
1.96539088728624 |
1.96539122912583 |
3.72835357846426 |
3.61091159069012 |
2460913.572794258 |
0.241668714996738 |
13.2806896185494 |
7.62938389773071 |
-87.1255832720534 |
12807611.619107 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
2110-Aug-20 20:48 |
00:02 |
Jupiter |
1.98629751877466 |
1.98629740544721 |
1.98629763210211 |
2.12909910373042 |
1.91838403200714 |
2491953.366727077 |
1.88020259076511 |
80.7931555989713 |
1.74545465393088 |
78.8948105428009 |
9815604.01522839 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
2121-Feb-01 15:09 |
00:02 |
Jupiter |
1.98030892521616 |
1.98030875628646 |
1.98030909414597 |
3.04768893604768 |
2.90395644350339 |
2495771.131127360 |
2.03154299410071 |
25.0257118226254 |
8.17366351919478 |
-39.5886761573434 |
2634060.21582497 |
T |
45 |
CATAB v2.0f-lin.ifort 2021-Apr-12 11:45:41 |
2021-Apr-12 11:45 |
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Alternate Designations
A922 MA = 1932 EG1 = 1951 TW = 1966 HO = A916 KD = A923 XB |
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