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JPL Small-Body Database Browser
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380 Fiducia (A894 AB)
Classification: Main-belt Asteroid          SPK-ID: 2000380
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1127528725967393 3.4855e-08  
a 2.678427636031757 8.6477e-09 au
q 2.376427226026682 9.376e-08 au
i 6.162200489246187 3.7493e-06 deg
node 95.04411805581584 3.6792e-05 deg
peri 239.6153715627192 4.0621e-05 deg
M 336.5075272203615 1.7224e-05 deg
tp 2458704.982735501050
7.66e-05 TDB
period 1601.099430153597
n .2248454987991998 1.0889e-09 deg/d
Q 2.980428046036831 9.6227e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3043  
   data-arc span      45977 days (125.88 yr)  
   first obs. used      1894-01-10  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4479  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:06:03  

Additional Information
 Earth MOID = 1.37235 au 
 Jupiter MOID = 2.34717 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.42   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 29
diameter diameter 67.508 km 2.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 13.69 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2004) Minor Planet Bull. 31, 67-70.]
[Behrend, R. (2008) Observatoire de Geneve web site,]
[Behrend, R. (2009) Observatoire de Geneve web site,]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.066   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.707   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=2.84, mean=7.29, max.=15.90) deg.
U-B UB 0.376   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.12, mean=9.51, max.=15.90) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

380 Fiducia (A894 AB)          Discovered 1894-Jan-08 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A894 AB = 1933 CA = 1975 LX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-14 00:24 UT
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