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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578201257896487 4.1062e-08  
a 3.088104153578995 1.3344e-08 au
q 2.600739167609621 1.2646e-07 au
i 3.338656637129621 4.6025e-06 deg
node 209.189203861175 5.8654e-05 deg
peri 346.9017358581105 5.9523e-05 deg
M 203.4897439635171 1.1209e-05 deg
tp 2459862.240763754760
(2022-Oct-09.74076375)
6.43e-05 TDB
period 1982.149175447001
5.43
1.2848e-05
3.518e-08
d
yr
n .1816210426840428 1.1772e-09 deg/d
Q 3.575469139548368 1.545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2547  
   data-arc span      32817 days (89.85 yr)  
   first obs. used      1930-03-30  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:09:10  

Additional Information
 Earth MOID = 1.59948 au 
 Jupiter MOID = 1.38774 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456266.5 (2012-Dec-05.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571956720733365 4.107e-08  
q 2.604378775341906 1.2652e-07 au
tp 2455901.611865534112
(2011-Dec-06.11186553)
5.6822e-05 TDB
node 209.224025210251 5.8714e-05 deg
peri 347.6583650826549 5.9596e-05 deg
i 3.335053054439797 4.6017e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2547  
   data-arc span      32817 days (89.85 yr)  
   first obs. used      1930-03-30  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:09:10  

Additional Information
 Jupiter MOID = 1.38774 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.686730716996731E-15 -5.175029810272503E-15 -1.642287363320582E-13 -5.823614019650535E-16 -4.337660124035943E-14 -1.902060453644971E-16
q -5.175029810272503E-15 1.600634476070653E-14 5.607219138293748E-13 1.854426261848015E-15 1.465883281507061E-13 7.456557250768239E-16
tp -1.642287363320582E-13 5.607219138293748E-13 3.228711199623544E-9 1.724565577593861E-13 5.929264529690754E-10 -3.228736353906597E-13
node -5.823614019650535E-16 1.854426261848015E-15 1.724565577593861E-13 3.447295806467181E-9 -3.441208538633005E-9 -6.220885297102684E-11
peri -4.337660124035943E-14 1.465883281507061E-13 5.929264529690754E-10 -3.441208538633005E-9 3.551686346842479E-9 6.206184501223696E-11
i -1.902060453644971E-16 7.456557250768239E-16 -3.228736353906597E-13 -6.220885297102684E-11 6.206184501223696E-11 2.117575805854482E-11

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

[ show close-approach data ]
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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