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135649 (2002 KQ12)
Classification: Main-belt Asteroid          SPK-ID: 2135649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1781260560812992 4.3888e-08  
a 2.410104060939537 1.7858e-08 au
q 1.980801729818854 1.093e-07 au
i 1.781438323105405 4.6952e-06 deg
node 257.9698646437246 0.00020032 deg
peri 28.81265417891105 0.00020145 deg
M 317.2097483268668 2.7125e-05 deg
tp 2459362.940552759343
(2021-May-28.44055276)
0.00010437 TDB
period 1366.633677223277
3.74
1.519e-05
4.159e-08
d
yr
n .2634209927648256 2.9279e-09 deg/d
Q 2.83940639206022 2.104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      293  
   data-arc span      9505 days (26.02 yr)  
   first obs. used      1994-03-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55211  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:13:58  

Additional Information
 Earth MOID = .962698 au 
 Jupiter MOID = 2.31874 au 
 T_jup = 3.498 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.04   n/a E2021B55  
rotation period rot_per 4.85 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

135649 (2002 KQ12)          Discovered 2002-May-17 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2002 KQ12 = 1999 TZ277 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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