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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249072237456137 6.073e-08  
a 2.189542522621035 1.08e-08 au
q 1.916052844847474 1.3225e-07 au
i 1.599544566239451 4.7436e-06 deg
node 259.1134854998104 0.00020904 deg
peri 80.81112228561328 0.00021001 deg
M 342.1486044151199 2.4638e-05 deg
tp 2457659.181090510574
(2016-Sep-27.68109051)
8.1109e-05 JED
period 1183.391656039451
3.24
8.7555e-06
2.397e-08
d
yr
n .3042103585594308 2.2507e-09 deg/d
Q 2.463032200394596 1.2149e-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 = .907215 au 
 Jupiter MOID = 2.86734 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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