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78112 (2002 MR2)
Classification: Main-belt Asteroid          SPK-ID: 2078112
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2191865906259778 4.0341e-08  
a 2.806868218071347 2.0152e-08 au
q 2.191640343015875 1.1605e-07 au
i 11.71396424971593 4.5449e-06 deg
node 301.8016489106556 2.4662e-05 deg
peri 355.8450340837853 3.0414e-05 deg
M 280.5993794012979 2.2553e-05 deg
tp 2459379.337408958414
(2021-Jun-13.83740896)
0.00010998 TDB
period 1717.63729548555
4.70
1.8498e-05
5.064e-08
d
yr
n .2095902324350924 2.2571e-09 deg/d
Q 3.422096093126819 2.4569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      7905 days (21.64 yr)  
   first obs. used      1998-10-02  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:13  

Additional Information
 Earth MOID = 1.17606 au 
 Jupiter MOID = 1.81925 au 
 T_jup = 3.257 
[ 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 14.5   n/a MPO468735  
diameter diameter 6.890 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78112 (2002 MR2)          Discovered 2002-Jun-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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