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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06232880098050937 3.3633e-08  
a 2.212215134784189 6.474e-09 au
q 2.074330417922154 7.5084e-08 au
i 3.891487694643494 3.3352e-06 deg
node 80.2744446785959 5.7974e-05 deg
peri 122.7130143627012 6.6664e-05 deg
M 291.4849838788685 3.4485e-05 deg
tp 2459229.229788904918
(2021-Jan-14.72978891)
0.00011538 TDB
period 1201.820106999495
3.29
5.2757e-06
1.444e-08
d
yr
n .2995456623693777 1.3149e-09 deg/d
Q 2.350099851646224 6.8775e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2354  
   data-arc span      19017 days (52.07 yr)  
   first obs. used      1968-03-31  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45998  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:45:06  

Additional Information
 Earth MOID = 1.07284 au 
 Jupiter MOID = 2.60927 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 13.3   n/a MPO452201  
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. 2019-August); 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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