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JPL Small-Body Database Browser
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266 Aline
Classification: Main-belt Asteroid          SPK-ID: 2000266
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537308654170941 3.7673e-08  
a 2.804698161748127 9.4163e-09 au
q 2.373529486108855 1.0581e-07 au
i 13.4007568148049 3.9765e-06 deg
node 235.8418697900537 1.7943e-05 deg
peri 151.6341030086431 2.2525e-05 deg
M 345.5034130033179 1.5477e-05 deg
tp 2459069.586133432322
7.3968e-05 TDB
period 1715.645761400819
n .2098335263021086 1.0567e-09 deg/d
Q 3.2358668373874 1.0864e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2545  
   data-arc span      46998 days (128.67 yr)  
   first obs. used      1891-04-04  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:40:15  

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] (  
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,]
geometric albedo albedo 0.027   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
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          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 ]
FirstGov 2020-Feb-22 07:52 UT
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