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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2108686292938869 3.8075e-08  
a 2.185308375440539 7.1326e-09 au
q 1.724495393726942 8.5102e-08 au
i 6.826511669215644 5.2672e-06 deg
node 170.9320974076996 3.1067e-05 deg
peri 125.1723995653201 3.3898e-05 deg
M 346.5324306116012 1.5017e-05 deg
tp 2459244.642227355173
(2021-Jan-30.14222736)
4.9339e-05 TDB
period 1179.960643941538
3.23
5.7768e-06
1.582e-08
d
yr
n .3050949214691235 1.4937e-09 deg/d
Q 2.646121357154136 8.6366e-09 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      7965 days (21.81 yr)  
   first obs. used      1998-07-31  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5496  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:26  

Additional Information
 Earth MOID = .718024 au 
 Jupiter MOID = 2.58947 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 16.06   n/a E2021B55  

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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