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550 Senta (1904 PL)
Classification: Main-belt Asteroid          SPK-ID: 2000550
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2224739243458632 4.1512e-08  
a 2.588416538962555 9.3991e-09 AU
q 2.012561353697818 1.0752e-07 AU
i 10.10880943347446 5.6152e-06 deg
node 270.7156661198537 2.9146e-05 deg
peri 45.29990688865379 3.1994e-05 deg
M 235.3949747818436 1.5229e-05 deg
tp 2457526.981036391647
(2016-May-18.48103639)
6.5675e-05 JED
period 1521.071664398457
4.16
8.2851e-06
2.268e-08
d
yr
n .2366752391922115 1.2891e-09 deg/d
Q 3.164271724227292 1.149e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1347  
   data-arc span      41826 days (114.51 yr)  
   first obs. used      1900-12-20  
   last obs. used      2015-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5118  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:35:28  

Additional Information
 Earth MOID = 1.01364 AU 
 T_jup = 3.364 
[ 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 9.37 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
diameter diameter 37.75 km 3.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 20.555 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Shevchenko, V.G.; Chiornij, V.G.; Krugly, Yu.N.; Lupishko, D.F.; et al. (1992) Icarus 100, 295-306.]
[Di Martino, M.; Blanco, C.; Riccioli, D.; De Sanctis, G. (1994) Icarus 107, 269-275.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.2215   0.052 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
B-V BV .850 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=4.16 deg.
U-B UB .390 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=4.16 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

550 Senta (1904 PL)          Discovered 1904-Nov-16 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1904 PL = A900 YA = A903 NA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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