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22285 (1987 RR)
Classification: Main-belt Asteroid          SPK-ID: 2022285
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177795543626465 3.5749e-08  
a 3.114290892360866 1.3344e-08 au
q 2.560583850142617 1.119e-07 au
i 12.8744662953246 3.8654e-06 deg
node 156.1155942260996 1.4428e-05 deg
peri 208.2575238702564 1.7316e-05 deg
M 11.65550859386549 8.0695e-06 deg
tp 2459135.507099577698
(2020-Oct-13.00709958)
4.5061e-05 TDB
period 2007.415117375752
5.50
1.2902e-05
3.532e-08
d
yr
n .1793351045749918 1.1526e-09 deg/d
Q 3.667997934579115 1.5717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2162  
   data-arc span      12239 days (33.51 yr)  
   first obs. used      1987-09-03  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46162  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:32  

Additional Information
 Earth MOID = 1.5634 au 
 Jupiter MOID = 1.80326 au 
 T_jup = 3.155 
[ 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 13.24   n/a E2021B10  
diameter diameter 14.519 km 0.545 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.053   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

22285 (1987 RR)          Discovered 1987-Sep-03 by Elst, E. W. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1987 RR = 1987 ST3 = 1998 QX25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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