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26812 (1985 RQ2)
Classification: Main-belt Asteroid          SPK-ID: 2026812
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865438675555646 4.0876e-08  
a 2.181116927995367 8.525e-09 au
q 1.774242940656199 8.9965e-08 au
i 4.248448683781348 3.181e-06 deg
node 55.0101963098299 6.7041e-05 deg
peri 310.0055085361291 6.7811e-05 deg
M 255.5477208726905 1.2211e-05 deg
tp 2459341.875437185381
(2021-May-07.37543719)
4.1063e-05 TDB
period 1176.567504448123
3.22
6.898e-06
1.889e-08
d
yr
n .3059747941694688 1.7939e-09 deg/d
Q 2.587990915334535 1.0115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1171  
   data-arc span      13645 days (37.36 yr)  
   first obs. used      1982-09-15  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52257  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:51:51  

Additional Information
 Earth MOID = .776325 au 
 Jupiter MOID = 2.87363 au 
 T_jup = 3.654 
[ 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 15.1   n/a MPO416976  
diameter diameter 2.593 km 0.793 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.457   0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26812 (1985 RQ2)          Discovered 1985-Sep-04 by Debehogne, H. at La Silla
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 RQ2 = 1982 RS = 1998 RL40 = 2000 DG112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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