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1465 Autonoma (1938 FA)
Classification: Main-belt Asteroid          SPK-ID: 2001465
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788040870461589 3.5262e-08  
a 3.026667539544382 1.3128e-08 au
q 2.485487013343905 1.0975e-07 au
i 9.921023362116829 3.5637e-06 deg
node 166.9420590826186 1.9346e-05 deg
peri 50.6547364883412 2.1568e-05 deg
M 215.7518053448935 1.2456e-05 deg
tp 2459971.143271815277
(2023-Jan-26.64327182)
6.9746e-05 TDB
period 1923.293241325003
5.27
1.2514e-05
3.426e-08
d
yr
n .1871789450848313 1.2179e-09 deg/d
Q 3.567848065744859 1.5476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2884  
   data-arc span      30281 days (82.90 yr)  
   first obs. used      1938-02-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:55:39  

Additional Information
 Earth MOID = 1.49252 au 
 Jupiter MOID = 1.45242 au 
 T_jup = 3.198 
[ 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 11.71   n/a E2021B10  
diameter diameter 18.111 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.882 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:
[Brinsfield, J.W. (2008) Minor Planet Bull. 35, 23-24.]
[Fauvaud, S.; Fauvaud, M. (2013) Minor Planet Bull. 40, 224-229.]
[Ditteon, R.; Adam, A.; Doyel, M.; Gibson, J.; et al. (2018) Minor Planet Bull. 45, 13-16.]
geometric albedo albedo 0.123   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1465 Autonoma (1938 FA)          Discovered 1938-Mar-20 by Wachmann, A. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 FA = 1938 EQ = 1950 QJ = 1975 EW1 = 1975 LD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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