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249428 (2009 EP22)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249428
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0147131120728716 5.3903e-08  
a 3.506831428351945 5.2379e-08 au
q 3.455235024525934 1.8805e-07 au
i 9.652343688907203 6.0035e-06 deg
node 198.0059861474127 2.7532e-05 deg
peri 355.2796934523516 0.00015957 deg
M 270.7944396002893 0.00015755 deg
tp 2459594.874524777942
(2022-Jan-15.37452478)
0.0010513 TDB
period 2398.671427669806
6.57
5.374e-05
1.471e-07
d
yr
n .1500830817623582 3.3625e-09 deg/d
Q 3.558427832177956 5.3149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8763 days (23.99 yr)  
   first obs. used      1996-04-13  
   last obs. used      2020-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:17:57  

Additional Information
 Earth MOID = 2.45306 au 
 Jupiter MOID = 1.40016 au 
 T_jup = 3.102 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457144.5 (2015-May-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01645516334609508 5.3857e-08  
q 3.446955548847633 1.881e-07 au
tp 2457182.559215875586
(2015-Jun-09.05921588)
0.00093648 TDB
node 198.0251493832498 2.7531e-05 deg
peri 352.9353520654906 0.00014353 deg
i 9.653601023944995 6.0048e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8763 days (23.99 yr)  
   first obs. used      1996-04-13  
   last obs. used      2020-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:17:57  

Additional Information
 Jupiter MOID = 1.40016 au 
 T_jup = 3.102 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.90052787975299E-15 -9.754784581299326E-15 2.049935230779374E-12 -5.122929194822331E-15 2.85131052245425E-13 2.662388257956894E-15
q -9.754784581299326E-15 3.538308845137591E-14 -2.566395354425185E-12 2.33660619373466E-14 -3.210216127814784E-13 -2.114440896069002E-15
tp 2.049935230779374E-12 -2.566395354425185E-12 8.76987134898145E-7 -5.723134602378742E-11 1.319470581224084E-7 2.818155477224717E-11
node -5.122929194822331E-15 2.33660619373466E-14 -5.723134602378742E-11 7.579834512027587E-10 -7.552418720972052E-10 -4.089583980885468E-12
peri 2.85131052245425E-13 -3.210216127814784E-13 1.319470581224084E-7 -7.552418720972052E-10 2.060151407000381E-8 8.460391699087879E-12
i 2.662388257956894E-15 -2.114440896069002E-15 2.818155477224717E-11 -4.089583980885468E-12 8.460391699087879E-12 3.605814797117924E-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 14.8   n/a MPO422968  
diameter diameter 6.015 km 0.381 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249428 (2009 EP22)          Discovered 2009-Mar-02 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 EP22 = 2005 SD275 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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