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101579 (1999 BR4)
Classification: Main-belt Asteroid          SPK-ID: 2101579
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082152864947181 3.1752e-08  
a 2.60302155584727 1.0363e-08 au
q 2.321334832429331 8.2034e-08 au
i .4960172026543991 4.1756e-06 deg
node 145.6878510550409 0.00043941 deg
peri 328.4823234422597 0.00044008 deg
M 53.42776329990581 2.2462e-05 deg
tp 2458772.843756077725
(2019-Oct-16.34375608)
9.58e-05 TDB
period 1533.963668888298
4.20
9.1603e-06
2.508e-08
d
yr
n .2346861319478974 1.4015e-09 deg/d
Q 2.884708279265209 1.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1043  
   data-arc span      10630 days (29.10 yr)  
   first obs. used      1991-04-14  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:44  

Additional Information
 Earth MOID = 1.33781 au 
 Jupiter MOID = 2.19402 au 
 T_jup = 3.405 
[ 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 15.5   n/a MPO267996  

101579 (1999 BR4)          Discovered 1999-Jan-19 by ODAS at Caussols
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 BR4 = 2001 RZ117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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