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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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05243838339644105 3.717e-08  
a 3.182162778092745 1.8317e-08 au
q 3.015295306305234 1.2872e-07 au
i 11.74848667689573 3.2319e-06 deg
node 125.6697479559583 2.3726e-05 deg
peri 186.4808996842109 5.3805e-05 deg
M 355.6285241713704 4.8623e-05 deg
tp 2459421.677209557445
(2021-Jul-26.17720956)
0.00028003 TDB
period 2073.394843297457
5.68
1.7902e-05
4.901e-08
d
yr
n .1736282894518384 1.4991e-09 deg/d
Q 3.349030249880256 1.9277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1772  
   data-arc span      9349 days (25.60 yr)  
   first obs. used      1995-11-18  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46121  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:01:05  

Additional Information
 Earth MOID = 2.00048 au 
 Jupiter MOID = 1.89471 au 
 T_jup = 3.164 
[ 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 13.04   n/a E2021B10  
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 1.97039016822019 1.97038981080509 1.9703905256353 4.14935800851614 4.04443084125305 2443756.842792053 0.874054166943765 67.3461770145916 16.2696619913537 -88.6455384647057 4743689.37648575 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
1989-Jul-17 20:53 < 00:01 Jupiter 1.93117797351223 1.93117754313848 1.93117840388598 3.58243515540058 3.45783653617115 2447725.369974218 0.652164235067434 47.939447756774 19.9446365572323 -86.8008193290164 3810211.53496271 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2000-Apr-29 23:36 < 00:01 Jupiter 1.95242397211916 1.952423509081 1.95242443515721 3.14950940017392 3.00861213577383 2451664.483638704 0.427686387716237 51.7763297763133 17.9447523518594 89.419793164295 3326194.93392173 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2011-Feb-03 15:02 < 00:01 Jupiter 1.96582988179532 1.96582940768384 1.96583035590681 3.77913031759341 3.66334280046305 2455596.126392621 0.242982292060924 33.5322635305265 19.0671410907314 71.2203073974157 3470428.67736533 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2021-Dec-03 00:15 < 00:01 Jupiter 1.99839742277202 1.99839697905484 1.9983978664892 4.69708124795506 4.60596032169068 2459551.510571956 0.296787710587407 43.6889521189378 20.5735388935384 88.7539633533436 4308705.52586193 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2109-Jan-24 20:17 00:02 Jupiter 1.95073048937444 1.95072994159815 1.95073103715316 4.10551773038209 3.99835717696435 2491380.345240755 2.2563314261611 148.825825567138 16.6584145300111 -83.332391159356 4467549.23882073 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2119-Dec-07 03:27 00:03 Jupiter 1.92921451456169 1.929214078958 1.92921495016537 3.58426038164214 3.45959846986093 2495348.643615799 2.72530509054958 51.9106290967625 21.8869476127346 -89.5237101330672 2442175.8483529 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2130-Sep-19 11:20 00:03 Jupiter 1.96185348152081 1.96185297402601 1.96185398901673 3.2207613916596 3.08379827839232 2499287.972533674 3.23262291249448 199.648683963917 18.4358069190468 -87.7054203155299 3315575.41562548 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
2141-Jun-25 18:37 00:03 Jupiter 1.98522651132302 1.98522601585067 1.98522700679639 3.88994435376385 3.77866924520367 2503220.275473205 3.39240207400568 211.362067159225 20.4346893684165 89.5242623195446 3632634.93463094 T 28 CATAB v2.0g-lin.ifort 2021-Jul-08 05:01:09 2021-Jul-08 05:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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