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397 Vienna (1894 BM)
Classification: Main-belt Asteroid          SPK-ID: 2000397
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2464645287848635 3.8349e-08  
a 2.636710796366693 8.9928e-09 au
q 1.986855112398214 1.028e-07 au
i 12.85342707770324 4.7358e-06 deg
node 227.935172218593 2.0018e-05 deg
peri 139.9746502422577 2.1469e-05 deg
M 202.3577712157768 9.1878e-06 deg
tp 2458285.297614354235
(2018-Jun-15.79761435)
4.1754e-05 JED
period 1563.839480504712
4.28
8.0005e-06
2.19e-08
d
yr
n .230202654740379 1.1777e-09 deg/d
Q 3.286566480335172 1.1209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      42909 days (117.48 yr)  
   first obs. used      1898-10-23  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52298  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:27:34  

Additional Information
 Earth MOID = 1.00445 au 
 Jupiter MOID = 2.25629 au 
 T_jup = 3.319 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.31 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
diameter diameter 43.34 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 15.48 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Ruthroff, J.C. (2010) Minor Planet Bul. 37, 32-33.]
geometric albedo albedo 0.1776   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV .823 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=5.45, mean=10.38, max.=21.21) deg.
U-B UB .362 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=5.45, mean=10.38, max.=21.21) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B K   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)

397 Vienna (1894 BM)          Discovered 1894-Dec-19 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1894 BM = 1941 WA1 = 1951 AV1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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