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18908 (2000 OC21)
Classification: Main-belt Asteroid          SPK-ID: 2018908
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2227541294952036 3.9627e-08  
a 2.449174340467073 7.7635e-09 au
q 1.903610642274341 9.6319e-08 au
i 2.82732766792674 3.0068e-06 deg
node 49.71924278623926 8.7234e-05 deg
peri 272.4218040288025 8.7478e-05 deg
M 136.7719328570036 6.3767e-06 deg
tp 2458668.609220615490
(2019-Jul-04.10922062)
2.4523e-05 TDB
period 1399.999814133053
3.83
6.6567e-06
1.823e-08
d
yr
n .2571428912816887 1.2227e-09 deg/d
Q 2.994738038659805 9.4928e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1418  
   data-arc span      15833 days (43.35 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50651  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:42:08  

Additional Information
 Earth MOID = .891766 au 
 Jupiter MOID = 2.33751 au 
 T_jup = 3.461 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.97   n/a E2021B10  
diameter diameter 5.752 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18908 (2000 OC21)          Discovered 2000-Jul-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 OC21 = 1977 UL4 = 1981 UN7 = 1999 GG27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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