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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 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537308796103311 3.6955e-08  
a 2.804698155193894 8.0463e-09 au
q 2.373529440754464 1.0308e-07 au
i 13.40075448399296 3.9572e-06 deg
node 235.8418838469158 1.6941e-05 deg
peri 151.6340941646642 2.1125e-05 deg
M 345.5034139077014 1.3225e-05 deg
tp 2459069.586128880149
(2020-Aug-08.08612888)
6.3161e-05 TDB
period 1715.645755386941
4.70
7.3829e-06
2.021e-08
d
yr
n .2098335270376411 9.0298e-10 deg/d
Q 3.235866869633325 9.2833e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2850  
   data-arc span      47343 days (129.62 yr)  
   first obs. used      1891-04-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:15  

Additional Information
 Earth MOID = 1.38836 au 
 Jupiter MOID = 2.21873 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455385.5 (2010-Jul-08.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581400550250014 3.732e-08  
q 2.360639528498111 1.0495e-07 au
tp 2455633.693898807496
(2011-Mar-13.19389881)
5.4413e-05 TDB
node 235.9665661014476 1.6971e-05 deg
peri 150.8723593635742 2.0848e-05 deg
i 13.39045511795859 3.9602e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2850  
   data-arc span      47343 days (129.62 yr)  
   first obs. used      1891-04-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:15  

Additional Information
 Jupiter MOID = 2.21873 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.392784081562996E-15 -3.90874851925145E-15 -7.589795035306577E-14 -1.553775158306674E-14 -5.758472961669791E-15 -3.111986471414408E-15
q -3.90874851925145E-15 1.10145027235734E-14 3.210790996981465E-13 4.468992156331379E-14 3.685124018146966E-14 9.0682230108782E-15
tp -7.589795035306577E-14 3.210790996981465E-13 2.960748358194346E-9 -5.535024835640354E-12 6.779208156511048E-10 -2.315128415743616E-13
node -1.553775158306674E-14 4.468992156331379E-14 -5.535024835640354E-12 2.880214220259887E-10 -2.806295971467082E-10 -1.336262808555597E-11
peri -5.758472961669791E-15 3.685124018146966E-14 6.779208156511048E-10 -2.806295971467082E-10 4.346234747045363E-10 1.293330427856188E-11
i -3.111986471414408E-15 9.0682230108782E-15 -2.315128415743616E-13 -1.336262808555597E-11 1.293330427856188E-11 1.568330323206122E-11

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. 2020-October); 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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