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158 Koronis
Classification: Main-belt Asteroid          SPK-ID: 2000158
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05255926218060113 4.1581e-08  
a 2.869680836606917 1.3263e-08 AU
q 2.718852529141047 1.1898e-07 AU
i 1.001465170619324 4.6012e-06 deg
node 277.9964129842583 0.00028186 deg
peri 142.2246059788395 0.00028576 deg
M 253.8080871040873 4.4613e-05 deg
tp 2457524.266559011904
(2016-May-15.76655901)
0.00022074 JED
period 1775.615073711919
4.86
1.231e-05
3.37e-08
d
yr
n .2027466455595136 1.4056e-09 deg/d
Q 3.020509144072786 1.396e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1444  
   data-arc span      44142 days (120.85 yr)  
   first obs. used      1893-08-12  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59025  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:49  

Additional Information
 Earth MOID = 1.73092 AU 
 T_jup = 3.296 
[ 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 9.27 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
diameter diameter 35.37 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 14.218 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Slivan, S.M.; Binzel, R.P. (1996) Icarus 124, 452-470.]
[Slivan, S.M.; Binzel, R.P.; Crespo da Silva, L.D.; Kaasalainen, M.; et al. (2003) Icarus 162, 285-307.]
[Buchheim, R.K. (2011) Minor Planet Bul. 38, 128-130.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Klinglesmith III, D.A.; Hanowell, J.; Risely, E.; Turk, J.; et al. (2013) Minor Planet Bul. 40, 190-193.]
geometric albedo albedo 0.2766   0.024 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .859 mag .019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=11.71, mean=12.72, max.=13.87) deg.
U-B UB .394 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=11.71, mean=14.34, max.=20.84) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

158 Koronis          Discovered 1876-Jan-04 by Knorre, V. at Berlin
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1955 HA1 = A893 PA = A911 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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