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57821 (2001 WD44)
Classification: Main-belt Asteroid          SPK-ID: 2057821
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762178571652531 4.1307e-08  
a 3.18535055061947 1.9665e-08 au
q 2.624034902269148 1.3343e-07 au
i 9.756695782866704 4.4363e-06 deg
node 105.9333478915311 2.9363e-05 deg
peri 324.8861934906257 3.2134e-05 deg
M 67.43192436420725 1.3252e-05 deg
tp 2458611.546816467497
(2019-May-08.04681647)
7.5302e-05 TDB
period 2076.511198396485
5.69
1.9229e-05
5.265e-08
d
yr
n .1733677142112201 1.6054e-09 deg/d
Q 3.746666198969792 2.313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      9729 days (26.64 yr)  
   first obs. used      1993-05-18  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53446  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 09:36:02  

Additional Information
 Earth MOID = 1.64597 au 
 Jupiter MOID = 1.55588 au 
 T_jup = 3.152 
[ 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 14.0   n/a MPO452955  

57821 (2001 WD44)          Discovered 2001-Nov-18 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast 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
1903-Mar-17 19:23 00:05 Jupiter 1.9843461487906 1.98434377069685 1.984348526898 3.87325295585693 3.76143377762319 2416191.307581896 4.90554408820767 293.178449413945 18.3740827246494 69.4481442050174 3009194.49404538 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
1914-Mar-28 10:59 00:04 Jupiter 1.78074446991463 1.78074278476588 1.78074615508098 3.2002563875446 3.0480039587608 2420219.957330963 4.11148377201725 306.331174055473 14.5027484780443 77.1616916735844 2968750.30999348 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
1925-May-08 00:29 00:03 Jupiter 1.66627949764422 1.66627885819884 1.66628013709991 2.79585315136587 2.60770620521852 2424278.520113819 3.25128173500263 258.91625162724 15.8343607013932 86.9005654919128 2607514.28357436 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
1936-Jul-09 23:11 00:03 Jupiter 1.66229280907225 1.66229228380401 1.66229333434116 2.48298842294889 2.26850833075976 2428359.466297217 2.60942775404974 148.063030315233 35.5253393942236 -83.2071362423586 2196037.36944945 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
1947-Sep-09 16:09 00:02 Jupiter 1.7562576517225 1.75625677586789 1.7562585275786 2.22399007590564 1.9953834867823 2432438.173006671 2.17940449174545 161.411136458897 39.0067908034487 74.8920758877307 2338634.43223949 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
1958-Oct-21 06:47 00:02 Jupiter 1.91949099619456 1.91949008968345 1.91949190270972 2.21813891224617 2.00937580959758 2436497.782490633 1.80675872489539 213.869670421038 22.5804850513928 83.5649323830148 2298196.85927407 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
2069-Feb-28 14:18 00:01 Jupiter 1.88218509946068 1.88218430663523 1.8821858922873 3.3341816335511 3.1963612889387 2476806.095992355 1.47882499550266 99.2322517761052 15.7447254422809 72.3878259612684 2915956.38438389 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
2080-Mar-18 20:46 00:02 Jupiter 1.69247959990801 1.69247894101844 1.69248025880085 2.87875327135177 2.69931388753627 2480842.365403141 1.7417735290914 148.047726906762 13.1755252195848 80.4787592072196 2780215.94039682 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
2091-May-11 19:25 00:02 Jupiter 1.61160205389724 1.61160167715539 1.61160243063927 2.66061642820529 2.45514233049987 2484913.308978402 2.06433361452152 176.020228718639 19.0453341821331 89.7500944390248 2573166.88784323 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
2102-Jul-19 23:06 00:03 Jupiter 1.65577149019469 1.65577064198177 1.65577233840864 2.49304850645216 2.27863459640921 2488999.462555727 2.60364916632366 137.042937756919 45.3799491598602 -80.108665148685 2496080.71955611 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
2113-Sep-15 12:12 00:03 Jupiter 1.79856966183167 1.79856805069851 1.79857127297047 2.3777275010316 2.17064586898917 2493075.008399596 3.38015220587839 221.658490547182 43.0867050351527 70.5745454942786 2228383.92543626 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 09:36:21 2020-Jan-29 09:36
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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