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20077 (1994 CX9)
Classification: Main-belt Asteroid          SPK-ID: 2020077
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104028969851064 2.8795e-08  
a 2.321632009901234 7.3505e-09 au
q 2.080115023537954 6.8645e-08 au
i 4.20148170143178 3.0861e-06 deg
node 118.7544887706774 4.5627e-05 deg
peri 298.4421437122724 4.8404e-05 deg
M 295.2695387967842 1.674e-05 deg
tp 2459432.824334641227
(2021-Aug-06.32433464)
6.0418e-05 TDB
period 1292.077314392542
3.54
6.1362e-06
1.68e-08
d
yr
n .2786210979714093 1.3232e-09 deg/d
Q 2.563148996264514 8.1151e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      9835 days (26.93 yr)  
   first obs. used      1994-02-07  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:12:47  

Additional Information
 Earth MOID = 1.0954 au 
 Jupiter MOID = 2.70544 au 
 T_jup = 3.566 
[ 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 14.89   n/a E2021B10  
diameter diameter 3.110 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.98 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.264   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20077 (1994 CX9)          Discovered 1994-Feb-07 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 CX9 = 1998 HK83 = 1999 RN57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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