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26957 (1997 MN4)
Classification: Main-belt Asteroid          SPK-ID: 2026957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2617663277981064 4.6964e-08  
a 2.423044913610561 7.6725e-09 au
q 1.788773344484844 1.1635e-07 au
i 4.676653700490614 3.8904e-06 deg
node 274.1795475026007 5.399e-05 deg
peri 56.59011258948691 5.4285e-05 deg
M 355.1693891576761 6.9525e-06 deg
tp 2459018.985881908966
(2020-Jun-18.48588191)
2.6655e-05 TDB
period 1377.655477630298
3.77
6.5434e-06
1.791e-08
d
yr
n .2613135183981085 1.2412e-09 deg/d
Q 3.057316482736277 9.6808e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1338  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1997-06-28  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54339  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:26:26  

Additional Information
 Earth MOID = .78306 au 
 Jupiter MOID = 2.32874 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456579.5 (2013-Oct-14.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2596453395913114 4.6614e-08  
q 1.79527433031674 1.1511e-07 au
tp 2456262.447576156658
(2012-Nov-30.94757616)
2.3046e-05 TDB
node 274.2906926265478 5.382e-05 deg
peri 56.45314670924405 5.4138e-05 deg
i 4.681911984519628 3.8916e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1338  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1997-06-28  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54339  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:26:26  

Additional Information
 Jupiter MOID = 2.32874 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.172850027950516E-15 -5.360623415051125E-15 -8.940518072794565E-14 1.268068481193835E-14 -3.647606898455778E-14 -3.077274870855129E-15
q -5.360623415051125E-15 1.325101940494373E-14 2.260766425543916E-13 -3.131907147970545E-14 9.250000100304101E-14 7.807030169230256E-15
tp -8.940518072794565E-14 2.260766425543916E-13 5.310960003890397E-10 -4.111654341260655E-12 1.561920224916247E-10 4.074293120015842E-13
node 1.268068481193835E-14 -3.131907147970545E-14 -4.111654341260655E-12 2.896583061795216E-9 -2.887905673222969E-9 6.562857238474075E-11
peri -3.647606898455778E-14 9.250000100304101E-14 1.561920224916247E-10 -2.887905673222969E-9 2.930883543022489E-9 -6.531889907883048E-11
i -3.077274870855129E-15 7.807030169230256E-15 4.074293120015842E-13 6.562857238474075E-11 -6.531889907883048E-11 1.514433719856732E-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 14.6   n/a MPO435951  
diameter diameter 4.460 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.141   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26957 (1997 MN4)          Discovered 1997-Jun-28 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 MN4 = 1998 YH10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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