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10841 Ericforbes (1994 PP1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2010841
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05410146735700161 9.2977e-08  
a 1.938787589128218 1.3555e-08 AU
q 1.833896335662837 1.8609e-07 AU
i 23.39289723283821 8.394e-06 deg
node 60.0377066819322 1.882e-05 deg
peri 190.3545689734164 8.7966e-05 deg
M 253.6147516949266 9.3305e-05 deg
tp 2457291.888685406616
(2015-Sep-26.38868541)
0.0002568 JED
period 986.0382752086798
2.70
1.0341e-05
2.831e-08
d
yr
n .3650973892710316 3.8289e-09 deg/d
Q 2.043678842593598 1.4289e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      9279 days (25.40 yr)  
   first obs. used      1989-11-02  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5391  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:39:17  

Additional Information
 Earth MOID = .824016 AU 
 T_jup = 3.803 
[ 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 15.0 mag n/a MPO233581  
rotation period rot_per 4.909 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2015) http://www.minorplanetobserver.com/PDO/PDOLig htcurves.htm]

10841 Ericforbes           Discovered 1994 Aug. 12 by R. H. McNaught at Siding Spring.
Eric Gray Forbes (1933-1984) was a professor and director of the History of Medicine and Science Unit at Edinburgh University. Forbes led `Scotland's Cultural Heritage' group and was a prolific author, researching extensively on the history of astronomy and navigation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

Alternate Designations
 1994 PP1 = 1989 VG4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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