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18854 (1999 RJ102)
Classification: Main-belt Asteroid          SPK-ID: 2018854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08498208265793453 4.765e-08  
a 2.962566422237742 1.5153e-08 au
q 2.710801357663513 1.4041e-07 au
i 12.82713116270068 5.1559e-06 deg
node 206.7863902208821 1.3757e-05 deg
peri 4.46271046696497 2.3778e-05 deg
M 176.8844125398346 2.0957e-05 deg
tp 2458285.359798544028
(2018-Jun-15.85979854)
0.00010572 TDB
period 1862.518397147953
5.10
1.429e-05
3.912e-08
d
yr
n .1932866813832619 1.483e-09 deg/d
Q 3.214331486811971 1.6441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      11059 days (30.28 yr)  
   first obs. used      1990-11-15  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:39:59  

Additional Information
 Earth MOID = 1.70471 au 
 Jupiter MOID = 1.74888 au 
 T_jup = 3.222 
[ 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 13.74   n/a E2021B10  
diameter diameter 4.884 km 1.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18854 (1999 RJ102)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RJ102 = 1990 VV5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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