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18941 (2000 QX50)
Classification: Main-belt Asteroid          SPK-ID: 2018941
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156132737408324 3.1117e-08  
a 3.136692337135734 1.6306e-08 au
q 2.774049067321689 9.4391e-08 au
i 6.027002725904036 3.9549e-06 deg
node 140.2185634011568 4.0181e-05 deg
peri 334.7584229506767 4.5185e-05 deg
M 74.64657544744507 2.1043e-05 deg
tp 2458579.760100400013
(2019-Apr-06.26010040)
0.0001177 TDB
period 2029.113364519118
5.56
1.5823e-05
4.332e-08
d
yr
n .1774173914059833 1.3835e-09 deg/d
Q 3.49933560694978 1.8191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      10828 days (29.65 yr)  
   first obs. used      1990-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53835  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:11:49  

Additional Information
 Earth MOID = 1.79181 au 
 Jupiter MOID = 1.59012 au 
 T_jup = 3.193 
[ 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 13.5   n/a MPO337418  
rotation period rot_per 9.14 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

18941 (2000 QX50)          Discovered 2000-Aug-24 by LINEAR at Socorro
Reference: 20001111/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
1939-Aug-25 23:56 00:02 Jupiter 1.73637546245049 1.73637453939494 1.73637638550793 2.78660452111781 2.60567522405041 2429501.497426061 1.96956348749618 120.152360060372 11.9940529133372 76.4746918340296 2440858.63566617 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
1950-Jan-15 23:54 00:02 Jupiter 1.61944275295391 1.61944240894642 1.6194430969614 2.22101378270691 1.97150591875592 2433297.495690008 1.64215379041902 107.681667408222 19.8212087414171 -86.5209462157897 2664184.05157644 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
1960-Jun-08 17:03 00:01 Jupiter 1.88524013786982 1.88523947870861 1.88524079703092 2.53297715314451 2.3489125362675 2437094.210609688 1.35220439296868 50.4978805521013 23.0565983086223 -89.9441393002081 2864767.98415443 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2023-Sep-18 05:27 < 00:01 Jupiter 1.96168267228365 1.96168226566348 1.96168307890371 3.62494896667874 3.50381045425881 2460205.727153501 0.311539350341061 31.734965698434 15.1875679614555 78.229569521754 3700077.66691473 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2034-Feb-03 15:46 < 00:01 Jupiter 1.64567513846388 1.64567472219737 1.6456755547303 2.45721074271535 2.23796615408315 2463997.157135652 0.568228899357865 54.1525546898439 13.1099752982569 79.8536549294067 2527407.97780395 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2044-Jun-27 02:39 < 00:01 Jupiter 1.68303993238103 1.68303942330859 1.68304044145346 2.25362968464832 2.01799601910209 2467793.610461656 0.858535060345648 63.1011914620183 18.4364959444047 -88.3052851319829 3067887.77803289 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2118-Mar-02 03:10 00:03 Jupiter 1.82604156445816 1.82604031511656 1.82604281380278 3.0272722807008 2.86995872338716 2494703.632184410 2.78115479797934 144.337930556363 13.4263589081168 72.6777213359039 2612088.00688118 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2128-Jul-17 10:22 00:03 Jupiter 1.59647374635909 1.59647337857012 1.59647411414797 2.27513589087812 2.02857747521523 2498493.932013952 3.02776594214479 199.991991648895 20.0555757125148 -89.3236419984333 2463944.16878879 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11
2138-Dec-11 02:30 00:03 Jupiter 1.77827194429097 1.77827030722251 1.77827358135883 2.40980272825755 2.20329609032849 2502292.604471218 3.34330762802231 75.3769290468506 42.3582704295315 -52.3166517313319 1526281.26642007 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 02:11:53 2020-Nov-13 02:11

Alternate Designations
 2000 QX50 = 1990 WW5 = 1998 HQ110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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