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85009 (2004 BL4)
Classification: Main-belt Asteroid          SPK-ID: 2085009
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266947133951997 4.155e-08  
a 2.650055685440154 1.3942e-08 au
q 2.314307639891994 1.1273e-07 au
i 5.148710556505311 3.9215e-06 deg
node 108.12908642 4.9689e-05 deg
peri 249.3727132954479 5.2564e-05 deg
M 44.97626429821305 1.5411e-05 deg
tp 2458803.638039325559
(2019-Nov-16.13803933)
6.7585e-05 TDB
period 1575.726818325695
4.31
1.2435e-05
3.405e-08
d
yr
n .2284659979212143 1.803e-09 deg/d
Q 2.985803730988313 1.5709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      7715 days (21.12 yr)  
   first obs. used      1998-11-21  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 13:17:18  

Additional Information
 Earth MOID = 1.31605 au 
 Jupiter MOID = 2.45421 au 
 T_jup = 3.374 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO417410  

85009 (2004 BL4)          Discovered 2004-Jan-16 by NEAT at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 2004 BL4 = 2002 RO211 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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