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386 Siegena (1894 AY)
Classification: Main-belt Asteroid          SPK-ID: 2000386
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 80 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707443096101801 3.0681e-08  
a 2.89594853699937 9.9234e-09 au
q 2.401481803382801 8.928e-08 au
i 20.25681280721765 3.4796e-06 deg
node 166.8863107107936 1.2449e-05 deg
peri 219.4801661264016 1.6599e-05 deg
M 26.73788377444964 1.2281e-05 deg
tp 2457266.806831201264
(2015-Sep-01.30683120)
6.1267e-05 JED
period 1800.050489169112
4.93
9.2522e-06
2.533e-08
d
yr
n .1999943902496718 1.028e-09 deg/d
Q 3.390415270615939 1.1618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2098  
   data-arc span      44478 days (121.77 yr)  
   first obs. used      1894-03-05  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47046  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:32:54  

Additional Information
 Earth MOID = 1.42929 au 
 Jupiter MOID = 2.13936 au 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.43 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
magnitude slope G 0.16   n/a PDS3 (MPC 17258) Fit
diameter diameter 165.01 km 2.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 9.763 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Zappala, V.; Scaltriti, F.; Lagerkvist, C.-I.; Rickman, H.; Harris, A.W. (1982) Icarus 52, 196-201.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2007) Minor Planet Bul. 34, 64-65.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.0692   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV .723 mag .011 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=3.84, mean=16.39, max.=21.64) deg.
U-B UB .407 mag .040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=3.84, mean=16.39, max.=21.64) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

386 Siegena (1894 AY)          Discovered 1894-Mar-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1894 AY = 1948 EW 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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