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JPL Small-Body Database Browser
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19964 (1987 BX1)
Classification: Main-belt Asteroid          SPK-ID: 2019964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1705705857162525 4.5225e-08  
a 2.791593037597913 1.3771e-08 au
q 2.315429378093425 1.2699e-07 au
i 6.617756730583769 4.6858e-06 deg
node 241.4112928129311 4.2836e-05 deg
peri 261.3722839736932 4.5203e-05 deg
M 45.46155528347465 1.4483e-05 deg
tp 2458785.361381686627
(2019-Oct-28.86138169)
6.8028e-05 TDB
period 1703.635128844076
4.66
1.2606e-05
3.451e-08
d
yr
n .2113128532658642 1.5636e-09 deg/d
Q 3.267756697102402 1.612e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1603  
   data-arc span      12063 days (33.03 yr)  
   first obs. used      1987-01-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:58:50  

Additional Information
 Earth MOID = 1.33933 au 
 Jupiter MOID = 1.83121 au 
 T_jup = 3.298 
[ 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 13.7   n/a MPO459004  
diameter diameter 11.036 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.173 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 0.048   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19964 (1987 BX1)          Discovered 1987-Jan-25 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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