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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242974886181988 6.0845e-08  
a 2.19034154569527 1.1941e-08 AU
q 1.918087592349244 1.3209e-07 AU
i 1.599616438190585 5.3717e-06 deg
node 259.1697310086645 0.00021238 deg
peri 80.6638105611603 0.00021363 deg
M 159.725788119429 2.5276e-05 deg
tp 2456475.162108090828
(2013-Jul-01.66210809)
8.2861e-05 JED
period 1184.039492394887
3.24
9.6826e-06
2.651e-08
d
yr
n .3040439126501172 2.4863e-09 deg/d
Q 2.462595499041297 1.3425e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      825  
   data-arc span      6859 days (18.78 yr)  
   first obs. used      1996-04-17  
   last obs. used      2015-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55418  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:47:16  

Additional Information
 Earth MOID = .910525 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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