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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1710207643882787 3.0984e-08  
a 2.896813217807539 1.0378e-08 AU
q 2.401398007008025 9.0202e-08 AU
i 20.25552983278588 3.5539e-06 deg
node 166.8860275212413 1.2688e-05 deg
peri 219.4930415917708 1.6988e-05 deg
M 306.7571753260576 1.2942e-05 deg
tp 2457266.840833287868
(2015-Sep-01.34083329)
6.5112e-05 JED
period 1800.856745877318
4.93
9.6772e-06
2.649e-08
d
yr
n .1999048513015508 1.0742e-09 deg/d
Q 3.392228428607053 1.2152e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1957  
   data-arc span      43968 days (120.38 yr)  
   first obs. used      1894-03-05  
   last obs. used      2014-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47196  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:34:59  

Additional Information
 Earth MOID = 1.43093 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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]
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 (024)
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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