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JPL Small-Body Database Browser
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172704 (2004 BS31)
Classification: Main-belt Asteroid          SPK-ID: 2172704
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003013605969456 4.7621e-08  
a 2.657640108546208 2.0397e-08 au
q 2.391075189682009 1.2256e-07 au
i 3.242145419675021 4.456e-06 deg
node 72.66159242997104 8.9596e-05 deg
peri 104.9030635477686 9.2309e-05 deg
M 230.5713881773546 2.4972e-05 deg
tp 2459569.445246750756
(2021-Dec-20.94524675)
0.00011298 TDB
period 1582.496218926732
4.33
1.8218e-05
4.988e-08
d
yr
n .2274886951983723 2.6189e-09 deg/d
Q 2.924205027410407 2.2443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      334  
   data-arc span      7263 days (19.89 yr)  
   first obs. used      2000-03-05  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:52:58  

Additional Information
 Earth MOID = 1.39729 au 
 Jupiter MOID = 2.03839 au 
 T_jup = 3.378 
[ 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 16.1   n/a MPO454184  

172704 (2004 BS31)          Discovered 2004-Jan-19 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2004 BS31 = 2000 EP81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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