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JPL Small-Body Database Browser
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496817 (1989 VB)
Classification: Apollo [NEO, PHA]          SPK-ID: 2496817
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4602216807934983 9.4846e-09  
a 1.861215160243972 3.5086e-09 au
q 1.004643590878151 1.7419e-08 au
i 2.185724372171737 2.6986e-06 deg
node 37.86419265940381 4.2091e-05 deg
peri 330.8794061519944 4.2803e-05 deg
M 222.3010823913157 2.4251e-06 deg
tp 2458955.249118200430
(2020-Apr-15.74911820)
6.3125e-06 TDB
period 927.4559653045552
2.54
2.6226e-06
7.18e-09
d
yr
n .388158590237526 1.0976e-09 deg/d
Q 2.717786729609793 5.1234e-09 au
  Orbit Determination Parameters
   # obs. used (total)      287  
   # delay obs. used      4  
   # Doppler obs. used      2  
   data-arc span      10280 days (28.15 yr)  
   first obs. used      1989-11-01  
   last obs. used      2017-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .28204  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-04 07:25:21  

Additional Information
 Earth MOID = .0164423 au 
 Jupiter MOID = 2.74106 au 
 T_jup = 3.857 
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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 19.9   n/a MPO437864  
diameter diameter 0.4 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
rotation period rot_per 16. h n/a LCDB (Rev. 2019-January); 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:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]

496817 (1989 VB)          Discovered 1989-Nov-01 by Parker, Q. A. at Siding Spring
Reference: Last Updated: 2017-10-09

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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