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9983 Rickfienberg (1995 DA)
Classification: Main-belt Asteroid          SPK-ID: 2009983
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156920701030514 6.9687e-08  
a 2.707306231331648 2.1771e-08 AU
q 2.394092369025999 1.8875e-07 AU
i 8.322045869633522 7.4173e-06 deg
node 49.23735482010484 4.4619e-05 deg
peri 7.065259095073003 5.493e-05 deg
M 202.1131450604462 3.08e-05 deg
tp 2457514.088716490053
(2016-May-05.58871649)
0.00014106 JED
period 1627.063494518076
4.45
1.9627e-05
5.374e-08
d
yr
n .2212574993003756 2.6689e-09 deg/d
Q 3.020520093637296 2.429e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      9526 days (26.08 yr)  
   first obs. used      1987-05-30  
   last obs. used      2013-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:30:38  

Additional Information
 Earth MOID = 1.40482 AU 
 T_jup = 3.340 
[ 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 13.3 mag n/a MPO266011  
rotation period rot_per 5.2963 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Tatge, C.B.; Odden, C.; Arion, D.N.; Feinberg, R.T. (2012) Minor Planet Bul. 39, 135-136.]

9983 Rickfienberg           Discovered 1995 Feb. 19 by D. di Cicco at Sudbury.
Trained as an astronomer at Rice and Harvard universities, Richard Tresch Fienberg (b. 1956) became editor of Sky & Telescope in 2000. As the fourth at the helm in the magazine's six-decade history, he says it's a dream job that conflicts with stargazing at his private observatory in New Hampshire.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1995 DA = 1987 KS2 = 1993 TS37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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