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20990 (1983 RL3)
Classification: Main-belt Asteroid          SPK-ID: 2020990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428017697046894 3.6832e-08  
a 2.169561269437204 5.4262e-09 au
q 1.859744080678819 8.0708e-08 au
i 3.06647678516734 3.5031e-06 deg
node 294.8142135094942 6.0965e-05 deg
peri 67.74012474852444 6.1936e-05 deg
M 222.2716665641284 1.1293e-05 deg
tp 2459647.057201473095
(2022-Mar-08.55720147)
3.7248e-05 TDB
period 1167.229636196584
3.20
4.379e-06
1.199e-08
d
yr
n .3084226006915481 1.1571e-09 deg/d
Q 2.47937845819559 6.2011e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1883  
   data-arc span      16093 days (44.06 yr)  
   first obs. used      1976-05-03  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:42  

Additional Information
 Earth MOID = .857864 au 
 Jupiter MOID = 2.97443 au 
 T_jup = 3.675 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.86   n/a E2021B10  
diameter diameter 2.910 km 0.365 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20990 (1983 RL3)          Discovered 1983-Sep-01 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1983 RL3 = 1976 JM5 = 1998 FO14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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