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JPL Small-Body Database Browser
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387 Aquitania (A894 EC)
Classification: Main-belt Asteroid          SPK-ID: 2000387
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350672309354058 3.5478e-08  
a 2.741148819158174 7.3357e-09 au
q 2.096794556656805 9.7637e-08 au
i 18.11271723048749 4.151e-06 deg
node 128.2281019433341 8.8225e-06 deg
peri 157.2445311273786 1.1285e-05 deg
M 101.2448853314963 7.7703e-06 deg
tp 2458134.304646664760
(2018-Jan-15.80464666)
3.4422e-05 TDB
period 1657.667215989983
4.54
6.6543e-06
1.822e-08
d
yr
n .2171726607894594 8.7178e-10 deg/d
Q 3.385503081659544 9.0601e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2593  
   data-arc span      45920 days (125.72 yr)  
   first obs. used      1894-03-07  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:06:32  

Additional Information
 Earth MOID = 1.08997 au 
 Jupiter MOID = 1.89123 au 
 T_jup = 3.239 
[ 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 7.41   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 100.51 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 24.144 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1979) Astron. Astrophys. Suppl. Ser. 38, 91-99.]
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2003) Abstracts of Photometry and Polarimetry of Asteroids: Impact on Collaboration, Kharkiv, 9-10.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.1900   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.881   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=7.56, mean=16.93, max.=23.25) deg.
U-B UB 0.449   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.56, mean=15.66, max.=22.65) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B L   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)

387 Aquitania (A894 EC)          Discovered 1894-Mar-05 by Courty, F. at Bordeaux
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A894 EC = 1945 NA = 1948 BG = 1953 EO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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