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187953 (2001 OB8)
Classification: Main-belt Asteroid          SPK-ID: 2187953
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2270970093847516 4.8033e-08  
a 2.346840757723148 8.7503e-09 au
q 1.813880240141976 1.1619e-07 au
i 3.840465231277823 3.5228e-06 deg
node 262.9891898531091 8.2798e-05 deg
peri 127.5771154151739 8.3939e-05 deg
M 95.28284693329043 1.3429e-05 deg
tp 2458852.934961805847
(2020-Jan-04.43496181)
4.7798e-05 TDB
period 1313.178791115431
3.60
7.3443e-06
2.011e-08
d
yr
n .2741439341205104 1.5332e-09 deg/d
Q 2.879801275304319 1.0737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      8186 days (22.41 yr)  
   first obs. used      1998-11-18  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:30  

Additional Information
 Earth MOID = .821532 au 
 Jupiter MOID = 2.57598 au 
 T_jup = 3.522 
[ 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 16.67   n/a MPCxxxxx  
diameter diameter 3.095 km 0.955 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187953 (2001 OB8)          Discovered 2001-Jul-17 by LONEOS at Anderson Mesa
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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