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227996 (2007 JM38)
Classification: Main-belt Asteroid          SPK-ID: 2227996
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07345774487371109 5.827e-08  
a 2.774415383743554 2.4508e-08 au
q 2.570613086310821 1.6489e-07 au
i 4.242800458607029 6.1371e-06 deg
node 198.6040897196035 8.544e-05 deg
peri 280.2214592628528 0.00010468 deg
M 77.98002242336041 5.4258e-05 deg
tp 2458834.874474439301
(2019-Dec-17.37447444)
0.00025664 TDB
period 1687.934744199572
4.62
2.2366e-05
6.123e-08
d
yr
n .2132783872345219 2.826e-09 deg/d
Q 2.978217681176287 2.6308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      8945 days (24.49 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57556  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:57  

Additional Information
 Earth MOID = 1.59075 au 
 Jupiter MOID = 2.08399 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457623.5 (2016-Aug-23.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07407348241760316 5.8569e-08  
q 2.569150005823499 1.6628e-07 au
tp 2457150.211050207771
(2015-May-07.71105021)
0.00026443 TDB
node 198.6193798748972 8.544e-05 deg
peri 281.0069210862821 0.00010425 deg
i 4.242578873345138 6.1376e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      8945 days (24.49 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57556  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:57  

Additional Information
 Jupiter MOID = 2.08399 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.430292763550965E-15 -9.647298440147982E-15 3.828911669417777E-12 1.79440645310558E-15 8.249426362014371E-13 -7.914115280496918E-15
q -9.647298440147982E-15 2.76486625609779E-14 -1.393406838096855E-11 -2.444656098479271E-15 -3.013409952059369E-12 2.292508518498697E-14
tp 3.828911669417777E-12 -1.393406838096855E-11 6.992498946731268E-8 -3.141795026041728E-11 1.584091385742402E-8 -1.418917630653687E-11
node 1.79440645310558E-15 -2.444656098479271E-15 -3.141795026041728E-11 7.300002717403507E-9 -7.286529726924746E-9 -1.603964608058002E-10
peri 8.249426362014371E-13 -3.013409952059369E-12 1.584091385742402E-8 -7.286529726924746E-9 1.086810724597771E-8 1.569216647055585E-10
i -7.914115280496918E-15 2.292508518498697E-14 -1.418917630653687E-11 -1.603964608058002E-10 1.569216647055585E-10 3.766973739379754E-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 17.09   n/a E2021B55  

227996 (2007 JM38)          Discovered 2007-May-12 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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