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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1803771856811166 4.9175e-08  
a 3.036504747847191 2.5362e-08 au
q 2.488788567123166 1.5319e-07 au
i 1.379722115460785 5.8383e-06 deg
node 359.1183150577801 0.00018913 deg
peri 320.7676959675649 0.00018971 deg
M 323.4718414521384 1.7986e-05 deg
tp 2457796.603187147623
(2017-Feb-12.10318715)
9.8089e-05 JED
period 1932.677424202568
5.29
2.4213e-05
6.629e-08
d
yr
n .1862700911656469 2.3337e-09 deg/d
Q 3.584220928571217 2.9936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1325  
   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      .48668  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:28:58  

Additional Information
 Earth MOID = 1.47551 au 
 Jupiter MOID = 1.72205 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. 2016-February); 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. (2016) 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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