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183071 (2002 RO21)
Classification: Main-belt Asteroid          SPK-ID: 2183071
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082281861018859 7.2498e-08  
a 2.665672238398203 1.9774e-08 au
q 2.110604143454391 1.9495e-07 au
i 3.382840310337066 6.1124e-06 deg
node 116.4465054356466 0.00012693 deg
peri 213.5775484647333 0.0001277 deg
M 38.40089357422055 1.3963e-05 deg
tp 2458830.930640388329
(2019-Dec-13.43064039)
6.1108e-05 TDB
period 1589.675754347098
4.35
1.7689e-05
4.843e-08
d
yr
n .2264612761536751 2.5199e-09 deg/d
Q 3.220740333342015 2.3892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      10900 days (29.84 yr)  
   first obs. used      1991-01-12  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56801  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:32:24  

Additional Information
 Earth MOID = 1.10059 au 
 Jupiter MOID = 2.13977 au 
 T_jup = 3.350 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456684.5 (2014-Jan-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096605752128723 7.2586e-08  
q 2.105934021904414 1.9557e-07 au
tp 2457243.171177399531
(2015-Aug-08.67117740)
5.8354e-05 TDB
node 116.5014536305353 0.00012711 deg
peri 213.9915668157692 0.00012786 deg
i 3.381747026008883 6.1104e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      10900 days (29.84 yr)  
   first obs. used      1991-01-12  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56801  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:32:24  

Additional Information
 Jupiter MOID = 2.13977 au 
 T_jup = 3.350 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.268708824231542E-15 -1.414970937094739E-14 1.668997563071948E-12 9.518208847198937E-14 3.658617314974429E-13 -2.901392097977948E-15
q -1.414970937094739E-14 3.824608294028833E-14 -4.483471339812522E-12 -2.541549083529351E-13 -1.012289213111335E-12 8.219636295826962E-15
tp 1.668997563071948E-12 -4.483471339812522E-12 3.405185131861633E-9 3.948808544323213E-11 8.773796188728761E-10 -5.17448597252693E-13
node 9.518208847198937E-14 -2.541549083529351E-13 3.948808544323213E-11 1.615587014352569E-8 -1.611638126766981E-8 3.01870764168113E-10
peri 3.658617314974429E-13 -1.012289213111335E-12 8.773796188728761E-10 -1.611638126766981E-8 1.634749656476144E-8 -3.016057935865653E-10
i -2.901392097977948E-15 8.219636295826962E-15 -5.17448597252693E-13 3.01870764168113E-10 -3.016057935865653E-10 3.73369582957928E-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 16.1   n/a MPO436904  
diameter diameter 4.015 km 0.691 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.039   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

183071 (2002 RO21)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2002 RO21 = 1993 NW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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