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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582078890441461 4.1085e-08  
a 3.087163853760873 1.3472e-08 au
q 2.598750177323975 1.2654e-07 au
i 3.339211673754873 4.6076e-06 deg
node 209.1858966263217 5.9488e-05 deg
peri 346.935439934375 6.0367e-05 deg
M 130.7741391770373 1.1044e-05 deg
tp 2457880.790364617088
(2017-May-07.29036462)
5.9179e-05 TDB
period 1981.243924588899
5.42
1.2969e-05
3.551e-08
d
yr
n .1817040272185056 1.1894e-09 deg/d
Q 3.575577530197772 1.5603e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2463  
   data-arc span      32749 days (89.66 yr)  
   first obs. used      1930-03-30  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47335  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:29:06  

Additional Information
 Earth MOID = 1.59783 au 
 Jupiter MOID = 1.38875 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456166.5 (2012-Aug-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571610326564597 4.1082e-08  
q 2.604659493970716 1.2657e-07 au
tp 2455901.728632785205
(2011-Dec-06.22863279)
5.7406e-05 TDB
node 209.2262186505203 5.9551e-05 deg
peri 347.6906602772477 6.0448e-05 deg
i 3.335115018677316 4.6059e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2463  
   data-arc span      32749 days (89.66 yr)  
   first obs. used      1930-03-30  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47335  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:29:06  

Additional Information
 Jupiter MOID = 1.38875 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.68776984409101E-15 -5.178772009792111E-15 -1.582761601728254E-13 4.079957455144158E-18 -4.252666311819457E-14 -1.806009300407889E-16
q -5.178772009792111E-15 1.602119616730343E-14 5.319226522828826E-13 1.57391978791134E-16 1.415146614528106E-13 7.232674074410701E-16
tp -1.582761601728254E-13 5.319226522828826E-13 3.295456419713629E-9 -1.236533279604801E-13 6.084678333087928E-10 -3.438738069561508E-13
node 4.079957455144158E-18 1.57391978791134E-16 -1.236533279604801E-13 3.546325129401536E-9 -3.540124108526043E-9 -6.034823968293147E-11
peri -4.252666311819457E-14 1.415146614528106E-13 6.084678333087928E-10 -3.540124108526043E-9 3.653980050224944E-9 6.01997667559108E-11
i -1.806009300407889E-16 7.232674074410701E-16 -3.438738069561508E-13 -6.034823968293147E-11 6.01997667559108E-11 2.121468282163933E-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 11.8   n/a MPO416728  
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-January); 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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