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39636 (1995 BQ2)
Classification: Main-belt Asteroid          SPK-ID: 2039636
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198626725032764 5.1366e-08  
a 3.151545612908942 3.0524e-08 au
q 2.525564429025464 1.6154e-07 au
i 25.33784126159859 8.4328e-06 deg
node 225.8645083756664 1.3497e-05 deg
peri 243.463610163692 2.4253e-05 deg
M 202.0008863324204 2.0181e-05 deg
tp 2459897.383372231753
(2022-Nov-13.88337223)
0.00011717 TDB
period 2043.543197860885
5.59
2.9689e-05
8.128e-08
d
yr
n .1761646146638037 2.5594e-09 deg/d
Q 3.77752679679242 3.6587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      9291 days (25.44 yr)  
   first obs. used      1993-12-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51356  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:10:27  

Additional Information
 Earth MOID = 1.63673 au 
 Jupiter MOID = 1.90623 au 
 T_jup = 3.030 
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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 13.5   n/a MPO439362  
diameter diameter 10.279 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.623 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.067   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39636 (1995 BQ2)          Discovered 1995-Jan-29 by McNaught, R. H. at Siding Spring
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1995 BQ2 = 1999 UM9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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