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163 Erigone
Classification: Main-belt Asteroid          SPK-ID: 2000163
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1911105551475062 3.9742e-08  
a 2.366705425146782 3.8522e-09 AU
q 1.914403037476366 9.3771e-08 AU
i 4.814677347633841 4.8164e-06 deg
node 160.1739436565313 3.919e-05 deg
peri 298.2211050098182 4.0565e-05 deg
M 63.56166753019024 1.1085e-05 deg
tp 2456565.694904176373
(2013-Sep-30.19490418)
4.0953e-05 JED
period 1329.886986623757
3.64
3.2469e-06
8.89e-09
d
yr
n .2706996937491266 6.6091e-10 deg/d
Q 2.819007812817199 4.5884e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      44395 days (121.55 yr)  
   first obs. used      1892-09-13  
   last obs. used      2014-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57377  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:34:26  

Additional Information
 Earth MOID = .936252 AU 
 T_jup = 3.518 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.47 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
magnitude slope G -0.04   n/a PDS3 (MPC 17257) Fit
diameter diameter 72.63 km 5.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 16.136 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.0546   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV .717 mag .023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.23, mean=11.78, max.=18.33) deg.
U-B UB .341 mag .015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=5.23, mean=11.78, max.=18.33) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 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)

163 Erigone          Discovered 1876-Apr-26 by Perrotin, J. at Toulouse
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1957 OT = A892 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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