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4551 Cochran (1979 MC)
Classification: Main-belt Asteroid          SPK-ID: 2004551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2655276810153741 4.3297e-08  
a 2.429966300010762 7.0392e-09 au
q 1.784742983423396 1.051e-07 au
i 12.12075934630932 5.4755e-06 deg
node 148.2509430941606 1.5047e-05 deg
peri 161.0073932872005 1.7598e-05 deg
M 331.6212972943686 7.657e-06 deg
tp 2459309.565863073909
(2021-Apr-05.06586307)
2.9539e-05 TDB
period 1383.562564994062
3.79
6.0119e-06
1.646e-08
d
yr
n .2601978465654316 1.1306e-09 deg/d
Q 3.075189616598129 8.9083e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1568  
   data-arc span      14992 days (41.05 yr)  
   first obs. used      1979-06-28  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52428  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:29:24  

Additional Information
 Earth MOID = .773196 au 
 Jupiter MOID = 2.24952 au 
 T_jup = 3.430 
[ 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 14.39   n/a E2021B10  
diameter diameter 7.606 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 67.062 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.064   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4551 Cochran (1979 MC)          Discovered 1979-Jun-28 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 MC = 1979 QC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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