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18327 (1985 CX1)
Classification: Main-belt Asteroid          SPK-ID: 2018327
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07912664864898201 3.5427e-08  
a 2.230239093108247 6.5481e-09 au
q 2.053767747984646 8.0942e-08 au
i 2.571151435939991 3.415e-06 deg
node 219.9664884685139 6.9552e-05 deg
peri 330.86108960 7.2393e-05 deg
M 288.8613569329524 2.229e-05 deg
tp 2459636.896776184255
(2022-Feb-26.39677618)
7.591e-05 TDB
period 1216.537674815725
3.33
5.3577e-06
1.467e-08
d
yr
n .2959217847934968 1.3033e-09 deg/d
Q 2.406710438231847 7.0662e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      17888 days (48.97 yr)  
   first obs. used      1972-04-19  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:59:48  

Additional Information
 Earth MOID = 1.05447 au 
 Jupiter MOID = 2.55046 au 
 T_jup = 3.637 
[ 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 14.95   n/a E2021B10  
diameter diameter 2.691 km 0.352 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.443 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.293   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18327 (1985 CX1)          Discovered 1985-Feb-12 by Debehogne, H. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1985 CX1 = 1972 HG1 = 1993 RY15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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