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266 Aline (A887 KA)
Classification: Main-belt Asteroid          SPK-ID: 2000266
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537308751142192 3.7037e-08  
a 2.804698157876976 8.1776e-09 au
q 2.373529455635309 1.034e-07 au
i 13.40075455157026 3.9583e-06 deg
node 235.8418825592043 1.7086e-05 deg
peri 151.6340983503708 2.1296e-05 deg
M 345.5034095401382 1.3437e-05 deg
tp 2459069.586149793704
(2020-Aug-08.08614979)
6.418e-05 TDB
period 1715.64575784882
4.70
7.5034e-06
2.054e-08
d
yr
n .209833526736539 9.1771e-10 deg/d
Q 3.235866860118642 9.4347e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2830  
   data-arc span      47325 days (129.57 yr)  
   first obs. used      1891-04-04  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:32  

Additional Information
 Earth MOID = 1.38836 au 
 Jupiter MOID = 2.21873 au 
 T_jup = 3.267 
[ 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 8.7   n/a MPO492751 IRAS observations used: 6
diameter diameter 109.494 km 1.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.018 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Benishek, V. (2011) Minor Planet Bull. 38, 15-16.]
[Avdellidou, C.; Ioannidis, P.; Skoulidou, D.K.; et al. (2012) Minor Planet Bull. 39, 103-104.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 171-173.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.027   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.707   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.48 deg.
U-B UB 0.336   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.48 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   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)

266 Aline (A887 KA)          Discovered 1887-May-17 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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