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2779 Mary (1981 CX)
Classification: Main-belt Asteroid          SPK-ID: 2002779
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06219653417401273 3.2257e-08  
a 2.211917916214869 6.1153e-09 au
q 2.0743442879489 7.1461e-08 au
i 3.891446327392254 3.2622e-06 deg
node 80.27118266194044 5.6033e-05 deg
peri 122.7635582831343 6.3834e-05 deg
M 351.3471237256656 3.1383e-05 deg
tp 2459229.380847246403
(2021-Jan-14.88084725)
0.00010476 TDB
period 1201.577912253808
3.29
4.983e-06
1.364e-08
d
yr
n .2996060399651866 1.2425e-09 deg/d
Q 2.349491544480838 6.4956e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2546  
   data-arc span      19349 days (52.97 yr)  
   first obs. used      1968-03-31  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:30:53  

Additional Information
 Earth MOID = 1.0719 au 
 Jupiter MOID = 2.60878 au 
 T_jup = 3.651 
[ 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 13.34   n/a MPCxxxxx  
diameter diameter 6.261 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.36 h n/a LCDB (Rev. 2020-October); 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. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.216   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2779 Mary (1981 CX)          Discovered 1981-Feb-06 by Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 CX = 1935 EC = 1968 FN = 1969 RP = 1976 UF5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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