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216673 (2004 BL87)
Classification: Main-belt Asteroid          SPK-ID: 2216673
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195628839979711 4.7409e-08  
a 2.627777967657881 1.3526e-08 au
q 2.113708812120727 1.2953e-07 au
i 14.45110356104561 5.1977e-06 deg
node 153.6364662276329 1.542e-05 deg
peri 346.3050483264848 2.0843e-05 deg
M 340.3965671364254 1.0825e-05 deg
tp 2459285.224898320664
(2021-Mar-11.72489832)
4.6673e-05 TDB
period 1555.899092148966
4.26
1.2013e-05
3.289e-08
d
yr
n .2313774728814692 1.7864e-09 deg/d
Q 3.141847123195034 1.6172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      7729 days (21.16 yr)  
   first obs. used      2000-02-07  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57509  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:41:54  

Additional Information
 Earth MOID = 1.12857 au 
 Jupiter MOID = 1.88618 au 
 T_jup = 3.330 
[ 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 16.65   n/a MPCxxxxx  

216673 (2004 BL87)          Discovered 2004-Jan-23 by LONEOS at Anderson Mesa
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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