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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2797326494300792 4.6534e-08  
a 2.374287478996473 9.1957e-09 au
q 1.710121751988126 1.0868e-07 au
i 23.53858793443999 7.1422e-06 deg
node 314.7145552476967 8.3181e-06 deg
peri 140.4177972522587 1.5343e-05 deg
M 242.0598898577798 1.2831e-05 deg
tp 2459638.281503517683
(2022-Feb-27.78150352)
4.9244e-05 TDB
period 1336.2828055385
3.66
7.7632e-06
2.125e-08
d
yr
n .2694040501815226 1.5651e-09 deg/d
Q 3.038453206004819 1.1768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      9105 days (24.93 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45065  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:01:49  

Additional Information
 Earth MOID = .769263 au 
 Jupiter MOID = 2.21015 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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