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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06232880115944126 3.3606e-08  
a 2.212215134847126 6.4686e-09 au
q 2.074330417585333 7.5035e-08 au
i 3.891487676861908 3.3342e-06 deg
node 80.27444519995169 5.7927e-05 deg
peri 122.7130138349534 6.6624e-05 deg
M 291.4849838516766 3.4485e-05 deg
tp 2459229.229789005456
(2021-Jan-14.72978901)
0.00011538 TDB
period 1201.820107050782
3.29
5.2712e-06
1.443e-08
d
yr
n .2995456623565946 1.3138e-09 deg/d
Q 2.350099852108919 6.8717e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2362  
   data-arc span      19025 days (52.09 yr)  
   first obs. used      1968-03-31  
   last obs. used      2020-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:09  

Additional Information
 Earth MOID = 1.07284 au 
 Jupiter MOID = 2.60927 au 
 T_jup = 3.651 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456495.5 (2013-Jul-22.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06244356745588958 3.3681e-08  
q 2.074564872351822 7.5227e-08 au
tp 2456825.411250373216
(2014-Jun-16.91125037)
0.00011281 TDB
node 80.30132324538974 5.7926e-05 deg
peri 122.5714275788956 6.6564e-05 deg
i 3.891667888442612 3.3335e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2362  
   data-arc span      19025 days (52.09 yr)  
   first obs. used      1968-03-31  
   last obs. used      2020-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:09  

Additional Information
 Jupiter MOID = 2.60927 au 
 T_jup = 3.651 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.134420105400678E-15 -2.525517901466943E-15 -1.192899407906619E-12 2.742782038669481E-17 -3.29415926480606E-13 4.993284757500014E-16
q -2.525517901466943E-15 5.659130050819425E-15 2.762160448555598E-12 -7.48545202228463E-16 7.61899180819966E-13 -1.054224755559947E-15
tp -1.192899407906619E-12 2.762160448555598E-12 1.272514530701357E-8 -1.790731240868267E-11 3.714459240526261E-9 -1.268810517986386E-13
node 2.742782038669481E-17 -7.48545202228463E-16 -1.790731240868267E-11 3.355407012850367E-9 -3.352488437799096E-9 2.370219262074586E-11
peri -3.29415926480606E-13 7.61899180819966E-13 3.714459240526261E-9 -3.352488437799096E-9 4.430827728326383E-9 -2.368375042752152E-11
i 4.993284757500014E-16 -1.054224755559947E-15 -1.268810517986386E-13 2.370219262074586E-11 -2.368375042752152E-11 1.111245330626689E-11

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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