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8261 Ceciliejulie (1985 RD)
Classification: Main-belt Asteroid          SPK-ID: 2008261
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802750061929062 4.9677e-08  
a 3.036415614766474 2.5571e-08 au
q 2.489025771010211 1.5454e-07 au
i 1.379763192915419 5.8554e-06 deg
node 359.1212613787819 0.00019134 deg
peri 320.7542906540253 0.00019191 deg
M 286.2158243868726 1.7699e-05 deg
tp 2457796.596476904618
(2017-Feb-12.09647690)
9.8098e-05 JED
period 1932.592327565322
5.29
2.4413e-05
6.684e-08
d
yr
n .1862782930808421 2.3531e-09 deg/d
Q 3.583805458522737 3.0181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1306  
   data-arc span      23888 days (65.40 yr)  
   first obs. used      1949-11-25  
   last obs. used      2015-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48664  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:58:53  

Additional Information
 Earth MOID = 1.47433 au 
 Jupiter MOID = 1.72131 au 
 T_jup = 3.216 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO279602  
rotation period rot_per 14.0088 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

8261 Ceciliejulie           Discovered 1985 Sept. 11 at Brorfelde.
Cecilie Ida Cetti Hansen and Julie Liv Cetti Hansen are the twin daughters (b. 1992) of Danish astrophysicist Anja C. Andersen.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05

[ show close-approach data ]
Alternate Designations
 1985 RD = 1990 OU3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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