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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156394809080557 1.9266e-08  
a 2.706871905831717 9.4441e-09 au
q 2.393850643756737 5.3369e-08 au
i 8.314920802373789 9.881e-07 deg
node 49.17879943791768 4.2837e-06 deg
peri 8.683344834914037 8.9646e-06 deg
M 11.34318327347057 7.1854e-06 deg
tp 2459149.245449141936
(2020-Oct-26.74544914)
3.2443e-05 TDB
period 1626.671972413411
4.45
8.513e-06
2.331e-08
d
yr
n .2213107535540101 1.1582e-09 deg/d
Q 3.019893167906696 1.0536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2139  
   data-arc span      12332 days (33.76 yr)  
   first obs. used      1987-05-30  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4839  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:45:54  

Additional Information
 Earth MOID = 1.40537 au 
 Jupiter MOID = 2.32211 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. 2020-October); 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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