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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07236738041504108 9.6669e-09  
a 2.367864466045974 5.7388e-09 au
q 2.196508317460367 2.2481e-08 au
i 5.351697927077525 3.0493e-07 deg
node 60.61138710139645 5.9344e-06 deg
peri 30.07822366548658 1.6765e-05 deg
M 161.5082005150189 1.4164e-05 deg
tp 2458603.429292866654
(2019-Apr-29.92929287)		 5.2299e-05 TDB
period 1330.864029706137
3.64		 4.8383e-06
1.325e-08		 d
yr
n .2705009617545155 9.8339e-10 deg/d
Q 2.539220614631581 6.1541e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2919  
   data-arc span      29895 days (81.85 yr)  
   first obs. used      1938-10-22  
   last obs. used      2020-08-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41037  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:34:20  

Additional Information
 Earth MOID = 1.2144 au 
 Jupiter MOID = 2.58137 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 12.48   n/a E2021B10  
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. 2020-October); 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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