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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156132740168885 3.1542e-08  
a 3.136692336970522 1.6547e-08 au
q 2.774049066309674 9.6218e-08 au
i 6.027002185933434 4.0474e-06 deg
node 140.2185650587992 4.0268e-05 deg
peri 334.7584212688233 4.5272e-05 deg
M 74.64657553791999 2.1083e-05 deg
tp 2458579.760099923299
(2019-Apr-06.26009992)
0.00011789 TDB
period 2029.113364358805
5.56
1.6056e-05
4.396e-08
d
yr
n .1774173914200004 1.4039e-09 deg/d
Q 3.499335607631369 1.846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1544  
   data-arc span      10752 days (29.44 yr)  
   first obs. used      1990-11-21  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54291  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:55:29  

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. 2019-August); 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 1.73637546111229 1.73637453025822 1.73637639196832 2.78660450956753 2.60567521155384 2429501.497431837 1.99302451072298 121.718949426891 12.053580162652 76.5127051212602 2440214.43567355 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
1950-Jan-15 23:54 00:02 Jupiter 1.61944275233156 1.61944240098178 1.61944310368133 2.22101371027341 1.9715058370535 2433297.495697636 1.66078971717754 108.361662716135 20.3357450017827 -86.5057204832419 2625006.45196399 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
1960-Jun-08 17:03 00:01 Jupiter 1.88524013188545 1.88523945961107 1.88524080415971 2.53297712209883 2.34891250218184 2437094.210611116 1.36626700715161 51.5702998984091 23.3214392060015 89.7640413690631 2785068.7553076 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2023-Sep-18 05:27 < 00:01 Jupiter 1.96168266629037 1.96168225861087 1.96168307396987 3.62494900010732 3.50381048846663 2460205.727156334 0.314626551458028 32.6182486376244 15.2076194977771 78.3509246778025 3699377.53992211 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2034-Feb-03 15:46 < 00:01 Jupiter 1.64567513623613 1.64567471845342 1.64567555401874 2.45721066982859 2.23796607374463 2463997.157128295 0.575963104516912 54.5579963344507 13.2732329314383 80.0629029169205 2508061.75964456 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2044-Jun-27 02:39 < 00:01 Jupiter 1.68303993246046 1.68303942338075 1.68304044154017 2.25362962110088 2.01799594814623 2467793.610451360 0.870635484554685 63.7922626691308 18.8417341961261 -88.4644693102741 3028512.3570314 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2118-Mar-02 03:10 00:03 Jupiter 1.82604155711068 1.82604029461149 1.82604281961288 3.02727229413567 2.86995873690812 2494703.632184899 2.81598679805663 146.099909349578 13.4518264673075 72.6966222351864 2602852.30967063 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2128-Jul-17 10:22 00:03 Jupiter 1.59647374560203 1.59647337462941 1.59647411657457 2.27513581692918 2.02857739215433 2498493.932006613 3.06666572286172 202.565138475509 20.2928298003612 -89.3062878365511 2433317.42265216 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55
2138-Dec-11 02:30 00:03 Jupiter 1.77827194545149 1.77827029625973 1.77827359464264 2.40980265061736 2.20329600555247 2502292.604474153 3.38679454197437 76.4156825991711 42.866112666561 -52.5155290103761 1525391.12140391 T 30 CATAB v2.0f-lin.ifort 2020-May-20 04:55:43 2020-May-20 04:55

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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