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173 Ino
Classification: Main-belt Asteroid          SPK-ID: 2000173
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 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2060138699406149 3.0184e-08  
a 2.743906326074878 8.2864e-09 AU
q 2.178623565085658 8.2753e-08 AU
i 14.21175718251773 4.7904e-06 deg
node 148.2717102380242 1.1889e-05 deg
peri 228.0239793964682 1.6709e-05 deg
M 48.15585021303183 1.3057e-05 deg
tp 2456778.425392877096
(2014-Apr-30.92539288)
5.9843e-05 JED
period 1660.169184233622
4.55
7.5204e-06
2.059e-08
d
yr
n .2168453693869674 9.8229e-10 deg/d
Q 3.309189087064099 9.9935e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1299  
   data-arc span      49577 days (135.73 yr)  
   first obs. used      1879-01-20  
   last obs. used      2014-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54268  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:41:19  

Additional Information
 Earth MOID = 1.20403 AU 
 T_jup = 3.274 
[ 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 7.66 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
magnitude slope G 0.01   n/a PDS3 (MPC 17257) Fit
diameter diameter 154.10 km 3.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
rotation period rot_per 6.163 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Schober, H.J. (1978) Astron. Astrophys. Suppl. Ser. 34, 377-381.]
[Debehogne, H.; Lagerkvist, C.-I.; Hahn, G. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 45-48.]
[Erikson, A. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 55-58.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Michalowski, T.; Kaasalainen, M.; Marciniak, A.; Denchev, P.; et al. (2005) Astron. Astrophys. 443, 329-335.]
[Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (2009) Planet. Space Sci. 57, 1-9.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0642   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
B-V BV .705 mag .016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=7.32, mean=11.68, max.=16.35) deg.
U-B UB .305 mag .012 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=3.48, mean=8.66, max.=16.35) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xk   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)

173 Ino          Discovered 1877-Aug-01 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A922 SB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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