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JPL Small-Body Database Browser
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172721 (2004 BH101)
Classification: Main-belt Asteroid          SPK-ID: 2172721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0820640619034492 4.041e-08  
a 2.755606931510894 2.1884e-08 au
q 2.529470633701811 1.1088e-07 au
i 3.422595485066345 4.3936e-06 deg
node 128.7081603642131 7.5537e-05 deg
peri 293.3515267857708 8.0836e-05 deg
M 264.8246761246627 3.169e-05 deg
tp 2459442.219113849193
(2021-Aug-15.71911385)
0.00014963 TDB
period 1670.799473128097
4.57
1.9903e-05
5.449e-08
d
yr
n .2154657131450983 2.5667e-09 deg/d
Q 2.981743229319978 2.368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      7129 days (19.52 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51805  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:46  

Additional Information
 Earth MOID = 1.54489 au 
 Jupiter MOID = 2.25563 au 
 T_jup = 3.336 
[ 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 16.2   n/a MPO436858  

172721 (2004 BH101)          Discovered 2004-Jan-28 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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