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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118973142383171 2.4394e-08  
a 3.02246052061854 1.4393e-08 au
q 2.662868894751477 7.7769e-08 au
i 9.227825054475039 1.1138e-06 deg
node 281.2895712627846 7.1521e-06 deg
peri 76.83508094821835 1.1132e-05 deg
M 300.7693361599653 8.6063e-06 deg
tp 2459712.279171850467
(2022-May-12.77917185)
4.6707e-05 TDB
period 1919.284615367255
5.25
1.371e-05
3.754e-08
d
yr
n .1875698878204753 1.3398e-09 deg/d
Q 3.382052146485603 1.6106e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2343  
   data-arc span      16711 days (45.75 yr)  
   first obs. used      1975-11-06  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:51:32  

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 12.50   n/a MPO636102  
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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