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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05116425571023655 4.039e-08  
a 3.176788614250251 1.9655e-08 au
q 3.014250589253384 1.3643e-07 au
i 11.74965599343008 4.1467e-06 deg
node 125.6719167851776 2.6816e-05 deg
peri 187.7004616808877 6.0329e-05 deg
M 285.5677067720849 5.5284e-05 deg
tp 2459428.102073037706
(2021-Aug-01.60207304)
0.00031814 TDB
period 2068.144613282473
5.66
1.9193e-05
5.255e-08
d
yr
n .1740690654260502 1.6155e-09 deg/d
Q 3.339326639247119 2.066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1431  
   data-arc span      8927 days (24.44 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:14:27  

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

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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 08:13 < 00:01 Jupiter 1.97039011760319 1.9703897177192 1.97039051748718 4.14935719517553 4.04443000349385 2443756.842684564 0.958704541943049 80.8780272842748 17.9425849714892 -88.103206957317 4091307.50339357 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
1989-Jul-17 20:53 < 00:01 Jupiter 1.931177847847 1.93117736117321 1.93117833452079 3.58243479551846 3.45783615436648 2447725.369883410 0.70667532915666 59.4759269788974 22.6536369345125 86.9157925647199 3625525.94029596 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2000-Apr-29 23:36 < 00:01 Jupiter 1.9524238107582 1.95242327200497 1.95242434951133 3.14950952576277 3.00861225453026 2451664.483629169 0.448525538276088 55.9252616030643 21.9353524204345 88.4654897825897 3082172.36199402 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2011-Feb-03 15:02 < 00:01 Jupiter 1.9658298035804 1.96582928327343 1.96583032388737 3.77912953125881 3.66334198394529 2455596.126434385 0.255234918786334 35.781842192922 20.5539596210949 70.4592192456914 2962652.55071479 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2021-Dec-03 00:15 < 00:01 Jupiter 1.99839742461784 1.99839695285739 1.99839789637829 4.69708021729516 4.6059592702176 2459551.510587770 0.348056956737968 47.417966322238 21.7689003186064 85.7622957533818 3772664.67032903 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2109-Jan-24 20:16 00:03 Jupiter 1.95073041188871 1.95072983791049 1.95073098586959 4.10551658991415 3.99835600101703 2491380.344674814 2.55492796111178 168.381104593171 18.541899340405 -84.2642987484475 3665858.8090026 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2119-Dec-07 03:26 00:03 Jupiter 1.92921446234942 1.92921397036748 1.92921495433125 3.58425924304893 3.45959728610433 2495348.642896125 3.08197466303674 63.8956787904769 24.2013828907661 85.2549438774706 2189284.91132854 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2130-Sep-19 11:19 00:04 Jupiter 1.9618534036303 1.96185283885708 1.9618539684042 3.22076167533662 3.08379856833655 2499287.971679239 3.65433136407704 221.3482513385 22.4055876283119 -88.2905918793207 3053797.51703915 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
2141-Jun-25 18:35 00:04 Jupiter 1.98522646542635 1.98522593711236 1.98522699374068 3.88994588935377 3.77867082277974 2503220.274538490 3.84152562261807 236.909280592649 22.4906127731153 88.5974072440206 3044702.01270714 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:14:42 2020-May-20 05:14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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