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JPL Small-Body Database Browser
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20612 (1999 RT237)
Classification: Main-belt Asteroid          SPK-ID: 2020612
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05116424571814651 4.7622e-08  
a 3.176788609282863 2.248e-08 au
q 3.014250616282906 1.5324e-07 au
i 11.74965100368594 5.1186e-06 deg
node 125.6719041858569 2.7935e-05 deg
peri 187.7004654346864 6.6589e-05 deg
M 285.5677172710144 6.3578e-05 deg
tp 2459428.102011720041
(2021-Aug-01.60201172)
0.0003668 TDB
period 2068.144608431689
5.66
2.1952e-05
6.01e-08
d
yr
n .174069065834325 1.8477e-09 deg/d
Q 3.33932660228282 2.363e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1343  
   data-arc span      8843 days (24.21 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49498  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:09:54  

Additional Information
 Earth MOID = 2.00024 au 
 Jupiter MOID = 1.90678 au 
 T_jup = 3.166 
[ 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 13.0   n/a MPO384931  
diameter diameter 9.729 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.142   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20612 (1999 RT237)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20010109/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
1978-Sep-05 08:14 00:01 Jupiter 1.97039013319526 1.97038964134994 1.9703906250408 4.14935669943532 4.04442949573342 2443756.842730443 1.15871616760361 99.7793728188614 20.5870456052649 -85.327348125853 3339865.03026455 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
1989-Jul-17 20:53 < 00:01 Jupiter 1.93117774788374 1.93117722855583 1.93117826721165 3.58243459296491 3.4578359379484 2447725.369906237 0.840397665627709 72.2784784695754 23.1688515216377 83.9153693555917 3528091.08796332 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2000-Apr-29 23:36 < 00:01 Jupiter 1.95242365324591 1.95242303537046 1.95242427112126 3.1495094621603 3.00861217631612 2451664.483665593 0.501668292032599 62.6466874895106 25.7816017516925 87.2591003413805 2878226.9005324 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2011-Feb-03 15:02 < 00:01 Jupiter 1.9658296961644 1.96582909540814 1.96583029692066 3.77912875193005 3.66334117355742 2455596.126455810 0.265914069835724 38.376788622519 23.5032359918142 69.9953558371756 2497327.90807222 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2021-Dec-03 00:15 < 00:01 Jupiter 1.9983973908172 1.99839686145792 1.99839792017658 4.69707924168482 4.60595827375003 2459551.510571558 0.444379211082832 51.3563774953127 23.4846723706049 80.5933977187605 3159853.75950569 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2109-Jan-24 20:16 00:03 Jupiter 1.95073036732878 1.95072977888768 1.95073095577331 4.10551578153338 3.99835516849007 2491380.344467718 3.20602877168096 204.280885047751 19.671469066324 -85.463733814745 3171328.69777569 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2119-Dec-07 03:25 00:04 Jupiter 1.92921436559383 1.92921383930348 1.92921489188418 3.58425861442339 3.45959662846232 2495348.642652431 3.86172051886064 77.7189337363254 25.0716515376461 82.1619034134711 1887381.98082147 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2130-Sep-19 11:19 00:05 Jupiter 1.96185326548383 1.96185264990975 1.96185388105807 3.22076164775116 3.0837985296673 2499287.971414439 4.57567240270509 268.574602077835 26.0283955389855 -89.0997066680844 2885450.07200319 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
2141-Jun-25 18:35 00:05 Jupiter 1.98522637060112 1.98522578841691 1.98522695278545 3.88994581747452 3.77867074339041 2503220.274276856 4.8226050462189 292.415831060719 24.7560621860161 87.1868489889542 2625584.26680499 T 21 CATAB v2.0f-lin.ifort 2020-Feb-22 23:10:29 2020-Feb-22 23:10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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