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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794627413330263 4.9503e-08  
a 3.039289429688469 2.6169e-08 AU
q 2.493850216932087 1.5389e-07 AU
i 1.379912303819225 5.8522e-06 deg
node 359.1253398759977 0.00019131 deg
peri 320.519079185028 0.00019189 deg
M 211.9559618971437 1.722e-05 deg
tp 2457796.375137924866
(2017-Feb-11.87513792)
9.8598e-05 JED
period 1935.336629050135
5.30
2.4995e-05
6.843e-08
d
yr
n .1860141510248211 2.4024e-09 deg/d
Q 3.584728642444852 3.0865e-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 = 1.48192 AU 
 T_jup = 3.215 
[ 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-July); 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) arXiv:1506.08493.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

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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