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22287 (1988 RL12)
Classification: Main-belt Asteroid          SPK-ID: 2022287
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168655284662 3.8522e-08  
a 3.084641056412603 1.6956e-08 au
q 2.564400040963243 1.2416e-07 au
i .3908971535975532 4.2934e-06 deg
node 202.6416024322482 0.00059326 deg
peri 196.4972813747075 0.00059343 deg
M 319.5455089859756 1.4745e-05 deg
tp 2459422.866632690272
(2021-Jul-27.36663269)
8.186e-05 TDB
period 1978.815843727859
5.42
1.6317e-05
4.467e-08
d
yr
n .1819269848384687 1.5001e-09 deg/d
Q 3.604882071861963 1.9816e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1121  
   data-arc span      11742 days (32.15 yr)  
   first obs. used      1988-09-14  
   last obs. used      2020-11-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:33  

Additional Information
 Earth MOID = 1.57119 au 
 Jupiter MOID = 1.81431 au 
 T_jup = 3.205 
[ 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 14.52   n/a E2021B10  
diameter diameter 6.188 km 0.888 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.080   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

22287 (1988 RL12)          Discovered 1988-Sep-14 by Bus, S. J. at Cerro Tololo
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1988 RL12 = 1999 TX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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