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

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151872897460026 5.8006e-08  
a 2.706810771525621 1.7886e-08 au
q 2.395020574898298 1.6208e-07 au
i 8.322023088584434 6.5522e-06 deg
node 49.22098675599664 4.0523e-05 deg
peri 7.089961916636679 5.0553e-05 deg
M 19.07384976813455 2.9236e-05 deg
tp 2457514.317095214186
0.00013192 JED
period 1626.616865501681
n .2213182511721768 2.1936e-09 deg/d
Q 3.018600968152943 1.9946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1103  
   data-arc span      10483 days (28.70 yr)  
   first obs. used      1987-05-30  
   last obs. used      2016-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52588  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:05:21  

Additional Information
 Earth MOID = 1.40527 au 
 Jupiter MOID = 2.33262 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 LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Tatge, C.B.; Odden, C.; Arion, D.N.; Feinberg, R.T. (2012) Minor Planet Bul. 39, 135-136.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]

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 ]
FirstGov 2016-Apr-30 16:56 UT
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