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78492 (2002 RX61)
Classification: Main-belt Asteroid          SPK-ID: 2078492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07064997712872337 4.6337e-08  
a 2.33972103549912 9.6493e-09 au
q 2.174419797853515 1.0891e-07 au
i 12.96690603802186 4.9701e-06 deg
node 23.8097385644501 1.4388e-05 deg
peri 180.1211738032062 2.9374e-05 deg
M 145.9805530084846 2.7592e-05 deg
tp 2458470.425331888997
(2018-Dec-17.92533189)
9.8857e-05 TDB
period 1307.207546397431
3.58
8.0866e-06
2.214e-08
d
yr
n .2753962069696843 1.7036e-09 deg/d
Q 2.505022273144727 1.0331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1555  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:36  

Additional Information
 Earth MOID = 1.1707 au 
 Jupiter MOID = 2.45167 au 
 T_jup = 3.528 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457379.5 (2015-Dec-23.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06986272266868866 4.6451e-08  
q 2.176559565180018 1.0906e-07 au
tp 2457162.447921278100
(2015-May-19.94792128)
9.6842e-05 TDB
node 23.85922643316906 1.4379e-05 deg
peri 180.0829661041017 2.955e-05 deg
i 12.97088873011041 4.971e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1555  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:36  

Additional Information
 Jupiter MOID = 2.45167 au 
 T_jup = 3.528 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.157664125012155E-15 -5.048832229918291E-15 -9.865156368987407E-13 -1.764737841345316E-16 -2.259815583862617E-13 2.825787057935534E-16
q -5.048832229918291E-15 1.189428656941225E-14 2.581064591210787E-12 3.68954174590589E-16 6.041728878545371E-13 -1.672037880090009E-16
tp -9.865156368987407E-13 2.581064591210787E-12 9.37836803418948E-9 -9.240201495370456E-12 2.505569224684073E-9 5.967877948279562E-12
node -1.764737841345316E-16 3.68954174590589E-16 -9.240201495370456E-12 2.06746028477804E-10 -2.035241444266214E-10 -9.971930638671657E-12
peri -2.259815583862617E-13 6.041728878545371E-13 2.505569224684073E-9 -2.035241444266214E-10 8.732089800126918E-10 1.137842891042455E-11
i 2.825787057935534E-16 -1.672037880090009E-16 5.967877948279562E-12 -9.971930638671657E-12 1.137842891042455E-11 2.47112107921184E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO337847  
diameter diameter 6.180 km 1.672 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.052   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

78492 (2002 RX61)          Discovered 2002-Sep-05 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 RX61 = 1995 UG50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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