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5871 Bobbell (1989 CE2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2005871
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07149127124045629 8.3943e-08  
a 1.86163438352215 9.4696e-09 AU
q 1.728543774859208 1.5307e-07 AU
i 20.35271703551084 9.4595e-06 deg
node 320.1599797613273 2.2934e-05 deg
peri 59.9177727738192 6.6297e-05 deg
M 178.737972691683 6.211e-05 deg
tp 2456539.867749528495
(2013-Sep-04.36774953)
0.00015933 JED
period 927.7693355948994
2.54
7.0789e-06
1.938e-08
d
yr
n .388027482897096 2.9607e-09 deg/d
Q 1.994724992185091 1.0147e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      14550 days (39.84 yr)  
   first obs. used      1974-03-23  
   last obs. used      2014-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49546  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:07:01  

Additional Information
 Earth MOID = .763194 AU 
 T_jup = 3.914 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO267731  
rotation period rot_per 30.21 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Warner, B.D. (2009) Minor Planet Bul. 36, 70-73.]
[Warner, B.D. (2014) http://www.minorplanetobserver.com/PDO/PDOLig htcurves.htm]

5871 Bobbell           Discovered 1989 Feb. 11 by E. F. Helin at Palomar.
Named in honor of Robert L. Bell, friend and associate of the discoverer's husband. Bob Bell graduated from the California Institute of Technology with a B.S. in physics and an M.S. in applied mechanics, which he promptly utilized to invent pressure-sensing devices to monitor automobile-engine functions, enabling us to drive efficiently down our highways. More recently he has joined the astronomical community with his own private dome and CCD-equipped telescope. Bob is the quintessential entrepreneur, applying and promoting new ideas to solve problems.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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