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1969 Alain (1935 CG)
Classification: Main-belt Asteroid          SPK-ID: 2001969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578201258907943 4.1016e-08  
a 3.088104153537348 1.3331e-08 au
q 2.600739167262199 1.2634e-07 au
i 3.338656548764499 4.6001e-06 deg
node 209.1892035380972 5.8539e-05 deg
peri 346.9017362039524 5.9408e-05 deg
M 203.4897439613719 1.1206e-05 deg
tp 2459862.240763749139
(2022-Oct-09.74076375)
6.4287e-05 TDB
period 1982.149175406904
5.43
1.2835e-05
3.514e-08
d
yr
n .1816210426877168 1.1761e-09 deg/d
Q 3.575469139812497 1.5435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2587  
   data-arc span      32996 days (90.34 yr)  
   first obs. used      1930-03-30  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46694  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:43:46  

Additional Information
 Earth MOID = 1.59948 au 
 Jupiter MOID = 1.38774 au 
 T_jup = 3.204 
[ 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 11.9   n/a MPO502172  
diameter diameter 22.895 km 0.406 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 32.4 h n/a LCDB (Rev. 2019-August); 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:
[Hayes-Gehrke, M.N.; Leffler, T.; Hampton, K.; Chavis, J.; et al. (2018) Minor Planet Bull. 45, 1.]
geometric albedo albedo 0.071   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1969 Alain (1935 CG)          Discovered 1935-Feb-03 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1935 CG = 1930 FZ = 1952 HW3 = 1952 KH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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