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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457200.5 (2015-Jun-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1289512036435268 4.1779e-08  
q 2.308112899830542 1.1363e-07 au
tp 2457225.641745958036
(2015-Jul-22.14174596)
6.7726e-05 TDB
node 108.24011554435 4.9782e-05 deg
peri 248.8373015638712 5.2497e-05 deg
i 5.145363814911875 3.9188e-06 deg
  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
 Jupiter MOID = 2.45421 au 
 T_jup = 3.374 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.745509443033907E-15 -4.721046460320061E-15 2.62337139060616E-13 1.182773081613437E-14 7.277041877009519E-14 -2.547198726027533E-15
q -4.721046460320061E-15 1.291267438888441E-14 -9.145763624866923E-13 -3.188884922176544E-14 -2.487911438022012E-13 7.225289902796856E-15
tp 2.62337139060616E-13 -9.145763624866923E-13 4.586822732817505E-9 4.332658183627724E-12 1.151588195881393E-9 1.504888846028173E-13
node 1.182773081613437E-14 -3.188884922176544E-14 4.332658183627724E-12 2.478230213231646E-9 -2.46679283222755E-9 2.415292398396367E-11
peri 7.277041877009519E-14 -2.487911438022012E-13 1.151588195881393E-9 -2.46679283222755E-9 2.755974994249889E-9 -2.406338611951446E-11
i -2.547198726027533E-15 7.225289902796856E-15 1.504888846028173E-13 2.415292398396367E-11 -2.406338611951446E-11 1.535695833250074E-11

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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