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JPL Small-Body Database Browser
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596 Scheila (A906 DL)
Classification: Main-belt Asteroid          SPK-ID: 2000596
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .163321725116708 3.8568e-08  
a 2.928751529626699 1.0932e-08 au
q 2.450422777369869 1.1223e-07 au
i 14.66140048675178 4.227e-06 deg
node 70.60366076351123 1.3052e-05 deg
peri 175.3154333734477 1.7026e-05 deg
M 139.146627257573 1.2205e-05 deg
tp 2457892.892540098678
(2017-May-19.39254010)
5.964e-05 TDB
period 1830.721236907392
5.01
1.025e-05
2.806e-08
d
yr
n .196643810506149 1.101e-09 deg/d
Q 3.407080281883529 1.2717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4338  
   data-arc span      41558 days (113.78 yr)  
   first obs. used      1906-02-22  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:45:39  

Additional Information
 Earth MOID = 1.43692 au 
 Jupiter MOID = 1.63064 au 
 T_jup = 3.209 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.90   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
diameter diameter 159.726 km 1.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.8480 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 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 Bull. 33, 58-62.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ishiguro, M.; Hanayama, H.; Hasegawa, S.; Sarugaku, Y.; et al. (2011) Astrophys. J. Letters 740, L11.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
[Husarik, M. (2012) Contr. Ast. Obs. Skalnat]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Shevchenko, V.G.; Belksaya, I.N.; Muinon, K.; Penttila, A.; et al. (2016) Plan. Space Sci. 123, 101-116.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 289-294.]
[Kokhirova, G.I.; Ivanova, O.V.; Rakhmatullaeva, F.Dzh.; et al. (2018) Solar System Research 52, 495-504.]
geometric albedo albedo 0.040   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.714   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.96, mean=6.93, max.=7.91) deg.
U-B UB 0.177   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A906 DL)          Discovered 1906-Feb-21 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A906 DL = 1949 WT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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