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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1160778337601703 6.9936e-08  
a 2.706252338463718 2.1899e-08 AU
q 2.392116429406454 1.8953e-07 AU
i 8.323774856157403 7.4499e-06 deg
node 49.23616194758162 4.4947e-05 deg
peri 6.979057531621322 5.528e-05 deg
M 113.676546246558 3.0624e-05 deg
tp 2455887.025087208155
(2011-Nov-21.52508721)
0.00013759 JED
period 1626.11351865083
4.45
1.9738e-05
5.404e-08
d
yr
n .2213867579790421 2.6872e-09 deg/d
Q 3.020388247520981 2.4441e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      951  
   data-arc span      9448 days (25.87 yr)  
   first obs. used      1987-05-30  
   last obs. used      2013-04-11  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .54017  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:38:01  

Additional Information
 Earth MOID = 1.40319 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 13.4 mag n/a PDS3 (MPC 33667)  
rotation period rot_per 5.2963 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) 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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