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134 Sophrosyne
Classification: Main-belt Asteroid          SPK-ID: 2000134
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 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .116992265323072 3.4171e-08  
a 2.562953345551179 6.745e-09 au
q 2.263107627737801 8.7743e-08 au
i 11.60181462655349 4.1813e-06 deg
node 345.9863227264384 1.9036e-05 deg
peri 84.71557845572474 2.5899e-05 deg
M 229.8848004270918 1.7272e-05 deg
tp 2458142.170281947530
(2018-Jan-23.67028195)
7.2239e-05 JED
period 1498.681953693233
4.10
5.9162e-06
1.62e-08
d
yr
n .2402110728783011 9.4826e-10 deg/d
Q 2.862799063364558 7.5342e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1361  
   data-arc span      50625 days (138.60 yr)  
   first obs. used      1877-09-10  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53383  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:25:37  

Additional Information
 Earth MOID = 1.31034 au 
 Jupiter MOID = 2.42537 au 
 T_jup = 3.396 
[ 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 8.76 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20
magnitude slope G 0.28   n/a PDS3 (MPC 17257) Fit
diameter diameter 108 km n/a Dunham occult. list: Dunham 1981a Yeomans E-mail 2001-Apr-04
rotation period rot_per 17.196 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Pilcher, F. (2015) Minor Planet Bul. 42, 280-281.]
geometric albedo albedo 0.0364   0.001 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20
B-V BV .690 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=6; phase (min.=8.28, mean=16.71, max.=25.70) deg.
U-B UB .322 mag .023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=8.28, mean=14.91, max.=16.83) 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)

134 Sophrosyne          Discovered 1873-Sep-27 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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