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80111 (1999 RK42)
Classification: Main-belt Asteroid          SPK-ID: 2080111
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 .1981112343031435 6.2434e-08  
a 2.325611406679738 1.3548e-08 au
q 1.864881660392945 1.4353e-07 au
i 22.4542491494428 8.2378e-06 deg
node 208.0286448519851 1.3104e-05 deg
peri 235.5733757229864 2.262e-05 deg
M 265.404978977635 2.4214e-05 deg
tp 2459340.884619131956
(2021-May-06.38461913)
8.9212e-05 TDB
period 1295.400768065083
3.55
1.132e-05
3.099e-08
d
yr
n .2779062733903775 2.4285e-09 deg/d
Q 2.786341152966531 1.6232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      695  
   data-arc span      7533 days (20.62 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49751  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:47:36  

Additional Information
 Earth MOID = .944816 au 
 Jupiter MOID = 2.74069 au 
 T_jup = 3.449 
[ 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 15.0   n/a MPO474691  
diameter diameter 4.163 km 0.946 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.065   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

80111 (1999 RK42)          Discovered 1999-Sep-13 by Korlevic, K. at Visnjan
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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