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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0524383882582019 3.6007e-08  
a 3.182162775356141 1.7477e-08 au
q 3.015295288241219 1.2399e-07 au
i 11.74848653261268 3.2292e-06 deg
node 125.6697598052775 2.1659e-05 deg
peri 186.4808747419313 4.9747e-05 deg
M 355.6285385079007 4.4135e-05 deg
tp 2459421.677126954722
(2021-Jul-26.17712695)
0.00025416 TDB
period 2073.394840622833
5.68
1.7081e-05
4.677e-08
d
yr
n .1736282896758143 1.4304e-09 deg/d
Q 3.349030262471064 1.8393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1866  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1995-11-18  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45413  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:34:02  

Additional Information
 Earth MOID = 2.00048 au 
 Jupiter MOID = 1.89471 au 
 T_jup = 3.164 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457433.5 (2016-Feb-15.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04998187530706411 3.6417e-08  
q 3.019959140255338 1.2475e-07 au
tp 2457362.855154385295
(2015-Dec-06.35515439)
0.00026716 TDB
node 125.6908804565926 2.1673e-05 deg
peri 188.3232594470537 5.1347e-05 deg
i 11.7466638002252 3.229e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1866  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1995-11-18  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45413  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:34:02  

Additional Information
 Jupiter MOID = 1.89471 au 
 T_jup = 3.164 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.326218498103346E-15 -4.512514583069913E-15 1.970235482604287E-12 5.378137650604557E-18 3.955798757892734E-13 -3.263892782860517E-16
q -4.512514583069913E-15 1.556307219749641E-14 -7.119883882116897E-12 2.881688466304904E-15 -1.418510889430864E-12 1.970380704930562E-15
tp 1.970235482604287E-12 -7.119883882116897E-12 7.137599731750383E-8 5.067024070181571E-11 1.246780214067924E-8 2.254528258380203E-11
node 5.378137650604557E-18 2.881688466304904E-15 5.067024070181571E-11 4.69713511015874E-10 -4.507122263659134E-10 -4.188211188113783E-13
peri 3.955798757892734E-13 -1.418510889430864E-12 1.246780214067924E-8 -4.507122263659134E-10 2.636495450647617E-9 4.386681689529008E-12
i -3.263892782860517E-16 1.970380704930562E-15 2.254528258380203E-11 -4.188211188113783E-13 4.386681689529008E-12 1.042635607100791E-11

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 13.06   n/a MPO636374  
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 1.97039017092595 1.97038982696294 1.97039051488896 4.14935781068057 4.04443063843086 2443756.842821846 0.841465333087581 65.0153362752665 15.421646519093 -87.4125510005583 4877249.882255 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
1989-Jul-17 20:53 < 00:01 Jupiter 1.93117797292354 1.93117758298422 1.93117836286275 3.58243472773604 3.45783609305761 2447725.369981398 0.635044875681128 47.268776677416 18.0947464783538 -88.6702414581893 4093078.69026512 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2000-Apr-29 23:36 < 00:01 Jupiter 1.95242395000356 1.9524235083444 1.95242439166273 3.14950914471341 3.00861186671642 2451664.483627968 0.42396005749385 49.4095638302454 17.2817588308544 88.0230654669444 3565276.50241198 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2011-Feb-03 15:02 < 00:01 Jupiter 1.96582983893719 1.9658293721604 1.96583030571398 3.77913048942393 3.66334297516038 2455596.126375107 0.230837798802446 31.8829285553047 19.011005292523 72.5845325827454 3524470.08980987 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2021-Dec-03 00:15 < 00:01 Jupiter 1.99839740491138 1.99839696839822 1.99839784142454 4.69708150016899 4.60596057807177 2459551.510543081 0.250459696163743 39.1661741642334 20.1863121173482 89.0856046374579 4315318.31582746 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2109-Jan-24 20:17 00:02 Jupiter 1.95073046027777 1.95072997444596 1.95073094611136 4.10551737753903 3.99835681304489 2491380.345134013 2.09353804403112 137.32255996716 15.4413488006549 -83.8690037104973 4613043.17164314 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2119-Dec-07 03:27 00:03 Jupiter 1.92921451960794 1.92921411135962 1.92921492785616 3.58425976054535 3.45959782671572 2495348.643481434 2.53120126901618 49.9075188360422 21.0487646217334 89.1527441142326 2758628.78799167 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2130-Sep-19 11:20 00:03 Jupiter 1.9618534735032 1.96185296963945 1.9618539773683 3.220761186467 3.08379806351418 2499287.972368572 3.00085870711139 187.208185438971 17.9380174959517 -87.2905286726527 3545081.27454388 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
2141-Jun-25 18:36 00:03 Jupiter 1.9852264781677 1.9852259862163 1.98522697012011 3.88994495992164 3.77866986732595 2503220.275294241 3.1473342912828 196.292129025336 19.8163932912324 89.9133792698794 3709405.83919145 T 29 CATAB v2.0g-lin.ifort 2021-Aug-24 22:34:11 2021-Aug-24 22:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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