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138 Tolosa
Classification: Main-belt Asteroid          SPK-ID: 2000138
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1622879545890723 3.2119e-08  
a 2.448868982909766 7.7621e-09 au
q 2.051447044616718 7.9766e-08 au
i 3.203789423673461 4.0578e-06 deg
node 54.76187238730849 6.7256e-05 deg
peri 260.8248495106969 6.8094e-05 deg
M 348.2966778068459 1.4971e-05 deg
tp 2457646.004402191156
(2016-Sep-14.50440219)
5.8315e-05 JED
period 1399.73799904428
3.83
6.6551e-06
1.822e-08
d
yr
n .2571909887749012 1.2228e-09 deg/d
Q 2.846290921202814 9.0218e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      40315 days (110.38 yr)  
   first obs. used      1905-11-30  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58275  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:25:39  

Additional Information
 Earth MOID = 1.04026 au 
 Jupiter MOID = 2.42461 au 
 T_jup = 3.477 
[ 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 8.75 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 45.50 km 2.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 10.101 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Harris, A.W. (1996) I.A.P.P.P. Comm. 65, 54-55.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (2005) Planetary and Space Science 53, 1147-1165.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Mendez, O.; Scheck, J.; Sosa, N. (2011) http://www.fisica.edu.uy/oalm/aster/aster.htm l]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.2699   0.027 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV .877 mag .042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=5.42, mean=7.21, max.=9.52) deg.
U-B UB .490 mag .040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=5.42, mean=7.21, max.=9.52) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

138 Tolosa          Discovered 1874-May-19 by Perrotin, J. at Toulouse
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A909 SB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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