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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 ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1154985078929221 3.1095e-08  
a 3.136385999782308 1.6237e-08 au
q 2.774138096631201 9.4246e-08 au
i 6.027046023555081 3.9545e-06 deg
node 140.2187843270021 4.0176e-05 deg
peri 334.7066949884058 4.5198e-05 deg
M 110.1992809969143 2.116e-05 deg
tp 2458579.460895520396
(2019-Apr-05.96089552)
0.00011786 TDB
period 2028.816119216946
5.55
1.5755e-05
4.313e-08
d
yr
n .1774433851299189 1.3779e-09 deg/d
Q 3.498633902933415 1.8112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1607  
   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      .53811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:12:31  

Additional Information
 Earth MOID = 1.79181 au 
 Jupiter MOID = 1.59045 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 13.53   n/a E2021B10  
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

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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 1.73637546268794 1.73637453974016 1.73637638563769 2.7866045401867 2.60567524446899 2429501.497429409 1.96926806567913 120.131477271534 11.9937903167753 76.4744016535209 2440934.27514602 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
1950-Jan-15 23:54 00:02 Jupiter 1.61944275263325 1.61944240870962 1.61944309655688 2.22101378939911 1.97150592624254 2433297.495697477 1.64191839104808 107.673019742973 19.8178448049176 -86.5224786839805 2664459.63243534 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
1960-Jun-08 17:03 00:01 Jupiter 1.88524013728766 1.88523947829309 1.88524079628212 2.53297716635579 2.34891255045497 2437094.210606423 1.35202599268612 50.492158816654 23.0529355465478 -89.9376350766118 2865768.22562819 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2023-Sep-18 05:27 < 00:01 Jupiter 1.96168267244433 1.96168226583565 1.96168307905302 3.62494897906249 3.5038104670808 2460205.727154435 0.31150006523379 31.724951461719 15.1872022915914 78.2272598468737 3700090.79934327 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2034-Feb-03 15:46 < 00:01 Jupiter 1.64567513801996 1.64567472176785 1.64567555427198 2.45721073188827 2.23796614213334 2463997.157132223 0.56813339013699 54.1435043236763 13.1092590187611 79.8508509152994 2527533.36543874 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2044-Jun-27 02:39 < 00:01 Jupiter 1.68303993236144 1.68303942329092 1.68304044143187 2.25362968883731 2.01799602377731 2467793.610454599 0.858385104189053 63.0967052559198 18.4320043235581 -88.3074161945472 3068382.50602038 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2118-Mar-02 03:10 00:03 Jupiter 1.82604156280808 1.82604031362301 1.82604281199616 3.02727231212565 2.86995875638849 2494703.632186793 2.78071779813012 144.315265559889 13.4260947649811 72.6773588633376 2612271.70368057 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2128-Jul-17 10:22 00:03 Jupiter 1.59647374598458 1.59647337822764 1.59647411374142 2.27513588487024 2.02857746841579 2498493.932007553 3.02727907819205 199.958967096073 20.0551497347349 -89.3239448178111 2464159.17216633 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12
2138-Dec-11 02:30 00:03 Jupiter 1.77827194711998 1.77827031020273 1.77827358403661 2.40980273188936 2.20329609464461 2502292.604466082 3.34276362869345 75.3665189232446 42.3560796580795 -52.3201549817229 1526293.92772033 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 19:12:37 2021-Feb-24 19:12

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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