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227997 (2007 KU7)
Classification: Main-belt Asteroid          SPK-ID: 2227997
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03557026172112748 3.7975e-08  
a 3.106084929776047 3.4523e-08 au
q 2.995600675895864 1.0604e-07 au
i 17.43877044495188 5.0284e-06 deg
node 103.1510769335656 1.5849e-05 deg
peri 228.2311300473527 8.5581e-05 deg
M 89.29031115876698 8.2996e-05 deg
tp 2458704.570146602755
(2019-Aug-09.07014660)
0.00046182 TDB
period 1999.486225392988
5.47
3.3335e-05
9.127e-08
d
yr
n .1800462515960789 3.0017e-09 deg/d
Q 3.216569183656231 3.5751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2001-05-23  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50471  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:57  

Additional Information
 Earth MOID = 1.99862 au 
 Jupiter MOID = 1.9996 au 
 T_jup = 3.148 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458162.5 (2018-Feb-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03650075613075031 3.8345e-08  
q 2.995911315172541 1.0693e-07 au
tp 2458691.211994481361
(2019-Jul-26.71199448)
0.00044819 TDB
node 103.1828265465833 1.587e-05 deg
peri 225.6509738236626 8.2967e-05 deg
i 17.42127912777617 5.0247e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2001-05-23  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50471  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:57  

Additional Information
 Jupiter MOID = 1.9996 au 
 T_jup = 3.148 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.470345180151047E-15 -3.943295722267839E-15 -1.551803844719699E-12 1.104048410863925E-15 -3.443485653777401E-13 1.529054286300928E-15
q -3.943295722267839E-15 1.143430143467254E-14 3.71209483806749E-12 -3.539373310974004E-15 7.97111313039717E-13 -3.940139561252042E-15
tp -1.551803844719699E-12 3.71209483806749E-12 2.008764069513098E-7 -6.733514791654039E-11 3.652066759845485E-8 -1.676421369389621E-11
node 1.104048410863925E-15 -3.539373310974004E-15 -6.733514791654039E-11 2.518611863824544E-10 -2.52347861836046E-10 -3.342077456008083E-11
peri -3.443485653777401E-13 7.97111313039717E-13 3.652066759845485E-8 -2.52347861836046E-10 6.883553302915399E-9 2.874588517311759E-11
i 1.529054286300928E-15 -3.940139561252042E-15 -1.676421369389621E-11 -3.342077456008083E-11 2.874588517311759E-11 2.524753328388224E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.04   n/a MPCxxxxx  
diameter diameter 5.909 km 0.333 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227997 (2007 KU7)          Discovered 2007-May-16 by PMO Neo Survey Program at XuYi
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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