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JPL Small-Body Database Browser
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1522 Kokkola (1938 WO)
Classification: Main-belt Asteroid          SPK-ID: 2001522
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07251772847527688 2.8223e-08  
a 2.367669539010195 6.5262e-09 au
q 2.19597152226107 6.7869e-08 au
i 5.351973299659982 3.2882e-06 deg
node 60.61174082154057 3.8788e-05 deg
peri 30.09894367106756 5.0674e-05 deg
M 107.3700244008006 3.0723e-05 deg
tp 2458603.618725991933
(2019-Apr-30.11872599)		 0.00011386 TDB
period 1330.699694260652
3.64		 5.5018e-06
1.506e-08		 d
yr
n .2705343674103863 1.1185e-09 deg/d
Q 2.53936755575932 6.9994e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2522  
   data-arc span      29689 days (81.28 yr)  
   first obs. used      1938-10-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:57:05  

Additional Information
 Earth MOID = 1.21418 au 
 Jupiter MOID = 2.58203 au 
 T_jup = 3.537 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO492768  
diameter diameter 9.422 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.83 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
geometric albedo albedo 0.206   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.880   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.32 deg.
U-B UB 0.510   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.32 deg.

1522 Kokkola (1938 WO)          Discovered 1938-Nov-18 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 WO = 1949 WB 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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