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120854 (1998 QQ12)
Classification: Main-belt Asteroid          SPK-ID: 2120854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2107397221292208 3.8103e-08  
a 2.185019349868915 7.2063e-09 au
q 1.724548979230569 8.5133e-08 au
i 6.826471163459196 5.2699e-06 deg
node 170.9357685880727 3.1144e-05 deg
peri 125.180735409282 3.3967e-05 deg
M 285.4876213843605 1.4854e-05 deg
tp 2459244.678422913114
(2021-Jan-30.17842291)
4.9344e-05 TDB
period 1179.726561973834
3.23
5.8362e-06
1.598e-08
d
yr
n .3051554585646303 1.5096e-09 deg/d
Q 2.645489720507261 8.725e-09 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      7937 days (21.73 yr)  
   first obs. used      1998-07-31  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:40:37  

Additional Information
 Earth MOID = .720005 au 
 Jupiter MOID = 2.59072 au 
 T_jup = 3.639 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO254020  

120854 (1998 QQ12)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 QQ12 = 2001 KZ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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