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227842 (2007 DK7)
Classification: Main-belt Asteroid          SPK-ID: 2227842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284500437471832 5.8688e-08  
a 2.352201523137985 1.7317e-08 au
q 2.05006113458872 1.3584e-07 au
i 1.7540380666703 7.0082e-06 deg
node 130.6173880484335 0.00025979 deg
peri 352.4353579413725 0.00026256 deg
M 334.3449368655346 3.4797e-05 deg
tp 2459294.403289058011
(2021-Mar-20.90328906)
0.00012752 TDB
period 1317.680797887788
3.61
1.4551e-05
3.984e-08
d
yr
n .2732072900941349 3.017e-09 deg/d
Q 2.65434191168725 1.9541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      186  
   data-arc span      6593 days (18.05 yr)  
   first obs. used      2002-12-31  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:22  

Additional Information
 Earth MOID = 1.06565 au 
 Jupiter MOID = 2.40134 au 
 T_jup = 3.545 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456392.5 (2013-Apr-10.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1277863609329339 5.8459e-08  
q 2.051515873624077 1.3531e-07 au
tp 2456658.665289377786
(2014-Jan-01.16528938)
0.00012781 TDB
node 130.6672038668685 0.00026026 deg
peri 352.4417779176877 0.00026308 deg
i 1.752725101706985 7.0013e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      186  
   data-arc span      6593 days (18.05 yr)  
   first obs. used      2002-12-31  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:22  

Additional Information
 Jupiter MOID = 2.40134 au 
 T_jup = 3.545 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.417407937723198E-15 -7.861986510117644E-15 9.472647288798396E-13 3.024371406317489E-14 1.516739861240338E-13 -2.442594773657268E-16
q -7.861986510117644E-15 1.830886815902715E-14 -2.387515168074007E-12 -6.887312215621623E-14 -4.22443363405327E-13 6.241197544501034E-16
tp 9.472647288798396E-13 -2.387515168074007E-12 1.633512853953894E-8 -1.6403756213574E-11 4.966797560968853E-9 -3.6220437256773E-12
node 3.024371406317489E-14 -6.887312215621623E-14 -1.6403756213574E-11 6.77346801964985E-8 -6.770793898820576E-8 6.650941438034708E-10
peri 1.516739861240338E-13 -4.22443363405327E-13 4.966797560968853E-9 -6.770793898820576E-8 6.921009456994874E-8 -6.658627882224654E-10
i -2.442594773657268E-16 6.241197544501034E-16 -3.6220437256773E-12 6.650941438034708E-10 -6.658627882224654E-10 4.901815994460554E-11

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 17.77   n/a MPCxxxxx  

227842 (2007 DK7)          Discovered 2007-Feb-17 by Calvin College at Calvin-Rehoboth
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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