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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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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054643016042875 1.3138e-08  
a 2.693657380548586 1.0644e-08 au
q 2.409572686147795 3.8587e-08 au
i 6.562353142394279 7.5312e-07 deg
node 124.6420460558448 1.036e-05 deg
peri 307.5101908116613 1.5274e-05 deg
M 225.0993244841345 1.285e-05 deg
tp 2459805.595025781114
(2022-Aug-14.09502578)
5.9071e-05 TDB
period 1614.774784842212
4.42
9.5712e-06
2.62e-08
d
yr
n .2229413063538625 1.3214e-09 deg/d
Q 2.977742074949377 1.1767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2398  
   data-arc span      25613 days (70.12 yr)  
   first obs. used      1950-08-17  
   last obs. used      2020-10-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46838  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:35:06  

Additional Information
 Earth MOID = 1.43075 au 
 Jupiter MOID = 2.25253 au 
 T_jup = 3.353 
[ 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 12.66   n/a E2021B10  
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. 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:
[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

[ show close-approach data ]
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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