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16830 (1997 WQ7)
Classification: Main-belt Asteroid          SPK-ID: 2016830
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1248270748060526 6.0743e-08  
a 2.189298519829498 1.0823e-08 au
q 1.916014789721961 1.3223e-07 au
i 1.59965366123487 4.7438e-06 deg
node 259.1159294968346 0.00020903 deg
peri 80.84142436762504 0.00021 deg
M 281.2657921676989 2.4525e-05 deg
tp 2457659.271750417230
(2016-Sep-27.77175042)
8.1109e-05 JED
period 1183.19384566138
3.24
8.7734e-06
2.402e-08
d
yr
n .304261217483571 2.2561e-09 deg/d
Q 2.462582249937035 1.2173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      6962 days (19.06 yr)  
   first obs. used      1996-04-17  
   last obs. used      2015-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:27:27  

Additional Information
 Earth MOID = .905983 au 
 Jupiter MOID = 2.86657 au 
 T_jup = 3.663 
[ 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 15.0 mag n/a MPO337401  

16830 (1997 WQ7)          Discovered 1997-Nov-19 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WQ7 = 1996 HO9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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