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2618 Coonabarabran (1979 MX2)
Classification: Main-belt Asteroid          SPK-ID: 2002618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189731423577401 2.4397e-08  
a 3.022460520616472 1.4613e-08 au
q 2.662868894826519 7.7838e-08 au
i 9.227825041655594 1.1153e-06 deg
node 281.2895713693435 7.1691e-06 deg
peri 76.83508082735102 1.1168e-05 deg
M 300.7693361725669 8.6958e-06 deg
tp 2459712.279171782960
(2022-May-12.77917178)
4.7234e-05 TDB
period 1919.284615365285
5.25
1.3919e-05
3.811e-08
d
yr
n .1875698878206678 1.3603e-09 deg/d
Q 3.382052146406425 1.6351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2270  
   data-arc span      16671 days (45.64 yr)  
   first obs. used      1975-11-06  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 21:49:55  

Additional Information
 Earth MOID = 1.67693 au 
 Jupiter MOID = 2.10094 au 
 T_jup = 3.215 
[ 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 12.48   n/a MPCxxxxx  
diameter diameter 12.361 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.5983 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 0.183   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2618 Coonabarabran (1979 MX2)          Discovered 1979-Jun-25 by Helin, E. F. and Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 MX2 = 1975 VP6 = 1975 XS3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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