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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1981112274263847 6.2694e-08  
a 2.325611405426631 1.3591e-08 au
q 1.864881675380762 1.4407e-07 au
i 22.45424967978041 8.2722e-06 deg
node 208.0286450456554 1.3123e-05 deg
peri 235.5733759097724 2.2634e-05 deg
M 265.4049795723458 2.4219e-05 deg
tp 2459340.884616716874
(2021-May-06.38461672)
8.9236e-05 TDB
period 1295.400767018084
3.55
1.1355e-05
3.109e-08
d
yr
n .2779062736149934 2.4361e-09 deg/d
Q 2.786341135472501 1.6283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      7241 days (19.82 yr)  
   first obs. used      1999-09-13  
   last obs. used      2019-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:53:29  

Additional Information
 Earth MOID = .944816 au 
 Jupiter MOID = 2.74069 au 
 T_jup = 3.449 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456568.5 (2013-Oct-03.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1983873768911504 6.2978e-08  
q 1.863883267993914 1.4498e-07 au
tp 2456749.060594703834
(2014-Apr-01.56059470)
7.4454e-05 TDB
node 208.1523244274896 1.3095e-05 deg
peri 235.2408922741894 2.2601e-05 deg
i 22.47536685851585 8.28e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      7241 days (19.82 yr)  
   first obs. used      1999-09-13  
   last obs. used      2019-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:53:29  

Additional Information
 Jupiter MOID = 2.74069 au 
 T_jup = 3.449 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.966176481153772E-15 -9.105802693334525E-15 -1.632066135241725E-12 -1.651648802800354E-14 -4.924259916039748E-13 2.104291802088275E-14
q -9.105802693334525E-15 2.101873516630149E-14 4.247296027484317E-12 3.847454719331889E-14 1.241181910490391E-12 -4.936124992723683E-14
tp -1.632066135241725E-12 4.247296027484317E-12 5.543362595219079E-9 4.50809442798962E-12 1.38628182163259E-9 -2.383509250303893E-11
node -1.651648802800354E-14 3.847454719331889E-14 4.50809442798962E-12 1.714797156970307E-10 -1.561062744994527E-10 4.41465561911071E-11
peri -4.924259916039748E-13 1.241181910490391E-12 1.38628182163259E-9 -1.561062744994527E-10 5.108268259050027E-10 -4.712905464919682E-11
i 2.104291802088275E-14 -4.936124992723683E-14 -2.383509250303893E-11 4.41465561911071E-11 -4.712905464919682E-11 6.855793667759037E-11

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

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