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20502 (1999 RG11)
Classification: Main-belt Asteroid          SPK-ID: 2020502
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05846275696401309 1.8355e-08  
a 2.793100073015492 1.2662e-08 au
q 2.62980774227062 5.0003e-08 au
i 15.47090281378528 9.0211e-07 deg
node 137.7178128515429 3.0561e-06 deg
peri 298.9621317640399 1.9696e-05 deg
M 102.5711482863645 1.7968e-05 deg
tp 2458714.707407997391
(2019-Aug-19.20740800)
8.4563e-05 TDB
period 1705.01487058216
4.67
1.1594e-05
3.174e-08
d
yr
n .211141853488399 1.4357e-09 deg/d
Q 2.956392403760363 1.3402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2537  
   data-arc span      8852 days (24.24 yr)  
   first obs. used      1996-12-26  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41633  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:04:29  

Additional Information
 Earth MOID = 1.67923 au 
 Jupiter MOID = 2.18516 au 
 T_jup = 3.273 
[ 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 13.06   n/a MPCxxxxx  
diameter diameter 14.430 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 37.3439 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.028   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20502 (1999 RG11)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RG11 = 1998 KD52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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