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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456584.5 (2013-Oct-19.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1983967564790815 6.2715e-08  
q 1.863871743551561 1.4444e-07 au
tp 2456749.060509038740
(2014-Apr-01.56050904)
7.4451e-05 TDB
node 208.1523414549167 1.3076e-05 deg
peri 235.2414334751011 2.2588e-05 deg
i 22.47533618714449 8.2455e-06 deg
  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
 Jupiter MOID = 2.74069 au 
 T_jup = 3.449 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.933116298866116E-15 -9.033982227599501E-15 -1.633655990643743E-12 -1.650125339733439E-14 -4.906200404569205E-13 2.076067181874729E-14
q -9.033982227599501E-15 2.086265594887026E-14 4.25033531205951E-12 3.849667878799466E-14 1.237114241893914E-12 -4.870792119280885E-14
tp -1.633655990643743E-12 4.25033531205951E-12 5.542953320773879E-9 4.711295055268165E-12 1.386102141495468E-9 -2.362238471421707E-11
node -1.650125339733439E-14 3.849667878799466E-14 4.711295055268165E-12 1.709883480283046E-10 -1.556106644806792E-10 4.361842629198203E-11
peri -4.906200404569205E-13 1.237114241893914E-12 1.386102141495468E-9 -1.556106644806792E-10 5.102105847746739E-10 -4.657710842784541E-11
i 2.076067181874729E-14 -4.870792119280885E-14 -2.362238471421707E-11 4.361842629198203E-11 -4.657710842784541E-11 6.7988437715834E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2024-Apr-12 02:15 < 00:01 Eunom 0.0464223299581416 0.0464194997656017 0.0464251601507605 9.27258677309338 9.27258674048224 2460412.593494124 0.310731399646284 141.141472929763 48.6601232105508 1.40664371320474 49303.1235760997 T 20 CATAB v2.0f-lin.ifort 2020-May-20 14:47:39 2020-May-20 14:47
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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