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3809 Amici (1984 FA)
Classification: Main-belt Asteroid          SPK-ID: 2003809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1063740175785162 3.5628e-08  
a 2.691573902755336 1.0685e-08 au
q 2.405260373109765 9.763e-08 au
i 6.561190650999281 3.1673e-06 deg
node 124.6488755226286 3.7145e-05 deg
peri 307.5511063539589 4.0812e-05 deg
M 180.4673883966822 1.7776e-05 deg
tp 2459804.856800110714
(2022-Aug-13.35680011)
8.1087e-05 TDB
period 1612.901664237283
4.42
9.604e-06
2.629e-08
d
yr
n .2232002160963971 1.329e-09 deg/d
Q 2.977887432400908 1.1821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2362  
   data-arc span      25613 days (70.12 yr)  
   first obs. used      1950-08-17  
   last obs. used      2020-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:57:01  

Additional Information
 Earth MOID = 1.42691 au 
 Jupiter MOID = 2.25334 au 
 T_jup = 3.354 
[ 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 12.6   n/a MPO337282  
diameter diameter 8.243 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.71 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 190-195.]
geometric albedo albedo 0.285   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3809 Amici (1984 FA)          Discovered 1984-Mar-26 by Osservatorio San Vittore at Bologna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1984 FA = 1951 XO = 1986 VT4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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