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26989 (1997 WO7)
Classification: Main-belt Asteroid          SPK-ID: 2026989
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07987285560514022 4.9398e-08  
a 3.063762704405822 2.473e-08 au
q 2.819051228308402 1.4583e-07 au
i 10.67952189763888 5.7879e-06 deg
node 58.76926118000184 3.1791e-05 deg
peri 33.32474810897711 5.6461e-05 deg
M 142.4458787501648 4.3807e-05 deg
tp 2456825.452173766893
(2014-Jun-16.95217377)
0.00024011 JED
period 1958.759494427254
5.36
2.3716e-05
6.493e-08
d
yr
n .1837897919699758 2.2252e-09 deg/d
Q 3.308474180503242 2.6705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      6745 days (18.47 yr)  
   first obs. used      1997-10-29  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50977  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:48:25  

Additional Information
 Earth MOID = 1.84026 au 
 Jupiter MOID = 1.95706 au 
 T_jup = 3.202 
[ 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 13.0 mag n/a MPO296347  
rotation period rot_per 6.1293 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

26989 (1997 WO7)          Discovered 1997-Nov-19 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WO7 = 1998 WC25 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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