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70171 (1999 OL2)
Classification: Main-belt Asteroid          SPK-ID: 2070171
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2801081348131094 4.6445e-08  
a 2.374491857609939 9.1024e-09 au
q 1.709377372245904 1.0836e-07 au
i 23.52185019342539 7.1426e-06 deg
node 314.730822212709 8.3369e-06 deg
peri 140.2665564699709 1.533e-05 deg
M 188.4261543442364 1.2592e-05 deg
tp 2459637.446622094649
(2022-Feb-26.94662209)
4.9195e-05 TDB
period 1336.455350042863
3.66
7.6848e-06
2.104e-08
d
yr
n .2693692684820738 1.5489e-09 deg/d
Q 3.039606342973975 1.1652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      9081 days (24.86 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44994  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:25:59  

Additional Information
 Earth MOID = .768936 au 
 Jupiter MOID = 2.21051 au 
 T_jup = 3.381 
[ 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 14.2   n/a MPO337792  
diameter diameter 3.980 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.280   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

70171 (1999 OL2)          Discovered 1999-Jul-22 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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