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91862 (1999 US20)
Classification: Main-belt Asteroid          SPK-ID: 2091862
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135371924659077 4.9291e-08  
a 3.000261103360478 2.1199e-08 au
q 2.594109983318805 1.506e-07 au
i 2.131479388885259 5.4357e-06 deg
node 95.02920194588739 0.00012858 deg
peri 333.0244945057204 0.00012988 deg
M 307.483799583263 1.7663e-05 deg
tp 2459277.403089052219
(2021-Mar-03.90308905)
9.392e-05 TDB
period 1898.178300557879
5.20
2.0118e-05
5.508e-08
d
yr
n .1896555238747567 2.0101e-09 deg/d
Q 3.406412223402152 2.4069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      8959 days (24.53 yr)  
   first obs. used      1994-10-31  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52854  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:49  

Additional Information
 Earth MOID = 1.60842 au 
 Jupiter MOID = 1.87765 au 
 T_jup = 3.238 
[ 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 15.6   n/a MPO412708  

91862 (1999 US20)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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
1925-Oct-26 03:54 00:03 Jupiter 1.92679884306383 1.9267981870243 1.92679949910381 2.74958907230123 2.58477044548418 2424449.662320111 2.86160480209736 87.8159721505746 10.5497870511978 86.7128406245591 2118828.96263582 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
1971-Dec-27 08:13 00:01 Jupiter 1.90366378600171 1.9036633182929 1.90366425371031 2.2777568749727 2.0732317065948 2441312.842650637 1.38365645900769 54.9264846317498 6.50697866550456 87.7601140846734 2385565.53458152 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2009-Feb-21 20:10 < 00:01 Jupiter 1.93640060299592 1.93640014355644 1.93640106243529 2.89800810554249 2.74291974812737 2454884.340575545 0.295589074869185 46.48078930229 12.4875395990883 87.6024764110797 2698511.76045974 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2055-Apr-24 15:21 00:01 Jupiter 1.89377854314002 1.89377807578604 1.89377901049388 2.30074462352847 2.09735406503414 2471747.139768099 1.36253119968028 51.3805015447304 9.9382757317412 89.6483795488429 2383917.15357031 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2092-Jun-21 02:45 00:03 Jupiter 1.95802812084339 1.95802743487037 1.95802880681707 3.0909496815834 2.94767549463886 2485319.614276475 2.51131961814171 101.130739772584 14.4375449367761 83.5349001827927 2323029.15897237 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2138-Aug-22 18:48 00:04 Jupiter 1.87693145193437 1.87693097619174 1.87693192767689 2.31877315330325 2.11521818920212 2502182.283426567 4.05303702669899 71.3436600786604 16.8279595908015 -76.7232732846403 2221882.11676131 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2175-Oct-19 07:39 00:05 Jupiter 1.98608771904109 1.98608638554603 1.98608905254281 3.31043747316651 3.17899991626222 2515753.818750646 5.12916694313712 211.841741590624 16.4400775197421 79.9932868059328 2376984.75363387 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04
2184-Oct-23 03:55 00:05 Jupiter 1.99127265419077 1.99127102358475 1.99127428479905 2.47671340612608 2.29855921213398 2519045.663455218 5.47954990732626 154.050277026711 17.6300488475458 73.2679233337193 1995057.17156662 T 19 CATAB v2.0e-lin.ifort 2019-May-30 06:04:53 2019-May-30 06:04

Alternate Designations
 1999 US20 = 2001 CE10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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