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442529 (2011 WT121)
Classification: Main-belt Asteroid          SPK-ID: 2442529
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2166579757825461 9.6617e-08  
a 3.065918067765095 4.5496e-08 au
q 2.401662465287974 3.0529e-07 au
i 4.972399298334973 9.6227e-06 deg
node 288.7004240665459 8.7614e-05 deg
peri 158.8559889672198 9.0146e-05 deg
M 205.3683614272318 2.52e-05 deg
tp 2459842.738522183959
(2022-Sep-20.23852218)
0.00015188 TDB
period 1960.826844912073
5.37
4.3646e-05
1.195e-07
d
yr
n .1835960176361942 4.0867e-09 deg/d
Q 3.730173670242215 5.5353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      6758 days (18.50 yr)  
   first obs. used      2000-11-30  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53584  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:21  

Additional Information
 Earth MOID = 1.41889 au 
 Jupiter MOID = 1.5 au 
 T_jup = 3.190 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO437721  
rotation period rot_per 1.35 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

442529 (2011 WT121)          Discovered 2006-Nov-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ 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
1914-Feb-22 00:35 00:07 Jupiter 1.59718837341049 1.59718495139391 1.59719179542878 1.82385269168605 1.50525634543468 2420185.524489447 6.9743739972823 706.205762289127 69.9451009537384 81.2517176513893 476062.347881983 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
1923-Jul-03 12:00 00:06 Jupiter 1.93820971740956 1.93820505259272 1.93821438220811 1.86110486015893 1.60925002357332 2423603.999810056 6.38687844083293 133.594306916481 68.3133747892183 -82.6319810554889 363881.344259978 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
1962-Sep-11 20:32 00:04 Jupiter 1.91925587325844 1.91925275150968 1.91925899500785 2.81940758045367 2.65827047084218 2437919.355306844 3.83221537901975 213.156267126913 62.3485497099157 70.2563515512154 689950.375799401 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
1972-Jan-17 21:13 00:03 Jupiter 1.59690825504911 1.5969064620978 1.59691004799924 1.54181390607521 1.14732824211192 2441334.384320921 3.02399653936995 599.755873743117 115.644208614278 56.0712792668435 1441602.68117879 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2020-Jul-01 08:30 < 00:01 Jupiter 1.50968981260173 1.50968886774667 1.50969075745628 1.66944196891571 1.29031850855238 2459031.854003217 0.618934487560525 1104.05728070852 81.3459811437935 78.3364531239659 1395070.03770382 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2069-Jan-07 01:28 00:04 Jupiter 1.73880976899727 1.73880751381109 1.73881202418266 2.08344060083232 1.83479405057564 2476753.560815279 3.96162339229177 298.113351186511 43.5175204026838 85.1770402065531 613979.949376422 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2078-May-20 05:14 00:05 Jupiter 1.74305999349723 1.74305717648293 1.74306281050837 1.65153692362552 1.32502614162707 2480173.718063063 4.56073376928606 248.514813621101 104.883470313485 41.9666194643128 728834.033982956 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2126-Nov-17 08:35 00:07 Jupiter 1.50481097995522 1.50480954542383 1.50481241452742 1.62756319492572 1.23418363633527 2497885.857522552 7.16552432288671 1145.48960886756 112.760054959532 76.0254204833372 1016661.50745987 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2175-May-05 18:26 00:11 Jupiter 1.59354586686894 1.59354091633532 1.59355081751661 1.7224837328239 1.37981297016226 2515587.267985173 11.315574320582 1170.95002632808 122.023582452426 84.7471161889326 430628.646000865 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
2184-Sep-15 06:22 00:12 Jupiter 1.93023875645825 1.93023037644456 1.93024713644693 2.01856561250904 1.78800787548056 2519007.765362073 12.0422278926442 309.433931539277 54.8945467879742 62.5982746432199 561990.878249645 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 07:43:22 2019-Sep-24 07:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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