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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242974883631137 6.0849e-08  
a 2.190341545433149 1.1961e-08 AU
q 1.918087592678428 1.3209e-07 AU
i 1.599616394826811 5.3852e-06 deg
node 259.1697318151301 0.00021251 deg
peri 80.66381034194147 0.00021378 deg
M 159.7257877207784 2.5294e-05 deg
tp 2456475.162109496291
(2013-Jul-01.66210950)
8.2929e-05 JED
period 1184.039492182343
3.24
9.6984e-06
2.655e-08
d
yr
n .3040439127046953 2.4904e-09 deg/d
Q 2.46259549818787 1.3447e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      6824 days (18.68 yr)  
   first obs. used      1996-04-17  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55311  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:33:03  

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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