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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1924-Oct-09 22:05 00:03 Jupiter 1.99767218889264 1.99767014403679 1.99767423376722 6.36402968575711 6.29705203427764 2424068.419802494 2.75715092987684 372.473963542475 51.4900764937361 -76.1456601407745 1891927.27849124 T 18 CATAB v2.0e-lin.ifort 2019-May-30 04:10:35 2019-May-30 04:10
1935-Jul-20 20:49 00:02 Jupiter 1.98351144602658 1.98350995910907 1.98351293297205 6.85159299306919 6.78898099051287 2428004.367596481 2.21242248149256 433.844411186856 34.816077667307 81.4311951714471 2459462.93327055 T 18 CATAB v2.0e-lin.ifort 2019-May-30 04:10:35 2019-May-30 04:10
2019-Apr-10 10:30 < 00:01 Jupiter 1.91440730474708 1.91440640863182 1.91440820086233 6.5361656800962 6.4681194412782 2458583.937716244 0.471753970402232 130.80618867834 43.3238529328857 89.7404284483723 2195358.30776884 T 18 CATAB v2.0e-lin.ifort 2019-May-30 04:10:35 2019-May-30 04:10
2113-Oct-12 02:46 00:03 Jupiter 1.93028838054408 1.93028729225989 1.93028946886272 6.69197779032225 6.62608137131504 2493101.615381200 2.98164406094061 580.183402748161 37.203020945245 86.244444300224 2356947.39560517 T 18 CATAB v2.0e-lin.ifort 2019-May-30 04:10:35 2019-May-30 04:10

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