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364 Isara (1893 T)
Classification: Main-belt Asteroid          SPK-ID: 2000364
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1490783675273392 3.8049e-08  
a 2.220646479573135 5.725e-09 AU
q 1.88959612754304 8.5312e-08 AU
i 6.004860442966038 4.9357e-06 deg
node 105.5687722296097 4.5356e-05 deg
peri 312.9423593907496 4.8667e-05 deg
M 24.23499121201868 1.954e-05 deg
tp 2456919.131196266601
(2014-Sep-18.63119627)
6.5504e-05 JED
period 1208.697337158373
3.31
4.6742e-06
1.28e-08
d
yr
n .2978413114124616 1.1518e-09 deg/d
Q 2.551696831603231 6.5785e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      41760 days (114.33 yr)  
   first obs. used      1900-04-29  
   last obs. used      2014-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60792  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:34:52  

Additional Information
 Earth MOID = .907793 AU 
 T_jup = 3.628 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.86 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
diameter diameter 27.99 km 1.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 9.156 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.]
[Warner, B.D. (2009) Minor Planet Bul. 36, 172-176.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.2566   0.020 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV .912 mag .069 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=17.26, mean=21.88, max.=26.49) deg.
U-B UB .538 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=17.26, mean=21.88, max.=26.49) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

364 Isara (1893 T)          Discovered 1893-Mar-19 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1893 T = 1976 AB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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