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596 Scheila (1906 UA)
Classification: Main-belt Asteroid          SPK-ID: 2000596
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648782283388306 4.576e-08  
a 2.92625047128791 1.5034e-08 AU
q 2.443775477906291 1.3751e-07 AU
i 14.66229781677968 3.553e-06 deg
node 70.69906274904275 1.5264e-05 deg
peri 175.538868112722 2.1282e-05 deg
M 144.7216759489181 1.5033e-05 deg
tp 2456065.484065508010
(2012-May-17.98406551)
7.3136e-05 JED
period 1828.376673239421
5.01
1.4091e-05
3.858e-08
d
yr
n .1968959707641484 1.5174e-09 deg/d
Q 3.408725464669528 1.7513e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      2855  
   data-arc span      39365 days (107.78 yr)  
   first obs. used      1906-03-27  
   last obs. used      2014-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .42285  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-21 20:41:20  

Additional Information
 Earth MOID = 1.43037 AU 
 T_jup = 3.209 
[ 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 8.90 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
diameter diameter 113.34 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
rotation period rot_per 15.851 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bul. 33, 58-62.]
[Warner, B.D. (2011) Minor Planet Bul. 38, 96-101.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0379   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
B-V BV .714 mag .033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.96, mean=6.93, max.=7.91) deg.
U-B UB .177 mag .039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.96, mean=6.93, max.=7.91) deg.
Tholen spectral type spec_T PCD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B T   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)

596 Scheila (1906 UA)          Discovered 1906-Feb-21 by Kopff, A. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1906 UA = 1949 WT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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