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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1241367286708148 6.3646e-08  
a 2.189957131102486 1.1967e-08 AU
q 1.918103016918101 1.3821e-07 AU
i 1.600658980367021 5.8969e-06 deg
node 259.2043054702123 0.0002268 deg
peri 80.44895658934264 0.00022824 deg
M 99.13681980510584 2.7077e-05 deg
tp 2456474.524973355670
(2013-Jul-01.02497336)
8.881e-05 JED
period 1183.727799849345
3.24
9.7024e-06
2.656e-08
d
yr
n .3041239717828861 2.4928e-09 deg/d
Q 2.461811245286871 1.3452e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      6537 days (17.90 yr)  
   first obs. used      1996-04-17  
   last obs. used      2014-03-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56706  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:07:47  

Additional Information
 Earth MOID = .908737 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 14.9 mag n/a MPO267772  

16830 (1997 WQ7)          Discovered 1997-Nov-19 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
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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