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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1154453899031498 3.4109e-08  
a 2.706285957156574 1.2009e-08 au
q 2.393857719643214 9.4086e-08 au
i 8.315569065536499 4.0107e-06 deg
node 49.17846739316199 3.1646e-05 deg
peri 8.684537257570666 3.8479e-05 deg
M 327.0684746143973 2.251e-05 deg
tp 2459149.253879097970
(2020-Oct-26.75387910)
0.00010206 TDB
period 1626.143819583934
4.45
1.0824e-05
2.963e-08
d
yr
n .2213826327440766 1.4736e-09 deg/d
Q 3.018714194669934 1.3395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1715  
   data-arc span      12116 days (33.17 yr)  
   first obs. used      1987-05-30  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:14:08  

Additional Information
 Earth MOID = 1.40612 au 
 Jupiter MOID = 2.32266 au 
 T_jup = 3.340 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO492866  
diameter diameter 7.444 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.2963 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Tatge, C.B.; Odden, C.; Arion, D.N.; Feinberg, R.T. (2012) Minor Planet Bull. 39, 135-136.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.167   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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