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397 Vienna (A894 YA)
Classification: Main-belt Asteroid          SPK-ID: 2000397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 117 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .248075004167662 1.9648e-08  
a 2.633527654136211 6.2689e-09 au
q 1.980215270360717 5.0447e-08 au
i 12.86636161663692 3.1564e-07 deg
node 227.9088871667905 4.1326e-06 deg
peri 140.0836900433572 5.3692e-06 deg
M 256.1904690033714 6.8019e-06 deg
tp 2459846.632094972585
(2022-Sep-24.13209497)
3.0578e-05 TDB
period 1561.008441463757
4.27
5.5738e-06
1.526e-08
d
yr
n .2306201494095881 8.2346e-10 deg/d
Q 3.286840037911705 7.824e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3430  
   data-arc span      44849 days (122.79 yr)  
   first obs. used      1898-10-23  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:34:46  

Additional Information
 Earth MOID = .998306 au 
 Jupiter MOID = 2.2629 au 
 T_jup = 3.320 
[ 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 9.43   n/a MPO614063 IRAS observations used: 5
diameter diameter 49.032 km 1.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.48 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Ruthroff, J.C. (2010) Minor Planet Bull. 37, 32-33.]
[Pilcher, F.; Marciniak, A.; Kaminski, K.; Horbowicz, J.; et al. (2017) Minor Planet Bull. 44, 316.]
geometric albedo albedo 0.139   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.823   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=5.45, mean=10.38, max.=21.21) deg.
U-B UB 0.362   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A894 YA)          Discovered 1894-Dec-19 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A894 YA = 1941 WA1 = 1951 AV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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