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27811 (1993 OA7)
Classification: Main-belt Asteroid          SPK-ID: 2027811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1290906929813522 3.8209e-08  
a 2.414927480186083 1.0763e-08 au
q 2.103182818269151 9.0783e-08 au
i 3.396973908833911 4.3254e-06 deg
node 111.7717022709008 8.0543e-05 deg
peri 333.4228366989818 8.292e-05 deg
M 177.1167148214211 2.1051e-05 deg
tp 2457926.109234797601
(2017-Jun-21.60923480)
7.8477e-05 TDB
period 1370.738361524199
3.75
9.1637e-06
2.509e-08
d
yr
n .262632177011298 1.7558e-09 deg/d
Q 2.726672142103016 1.2152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      14056 days (38.48 yr)  
   first obs. used      1979-12-18  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5069  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:36:22  

Additional Information
 Earth MOID = 1.12002 au 
 Jupiter MOID = 2.46234 au 
 T_jup = 3.503 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO449167  
diameter diameter 7.214 km 0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 13.05 h n/a LCDB (Rev. 2019-January); 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:
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.063   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27811 (1993 OA7)          Discovered 1993-Jul-20 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 OA7 = 1979 YZ5 = 1990 WL12 = 1996 KT3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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