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227872 (2007 EP8)
Classification: Main-belt Asteroid          SPK-ID: 2227872
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0196764175286297 4.1574e-08  
a 2.71706065733313 2.2927e-08 au
q 2.663598637388831 1.147e-07 au
i .7565036776149221 4.7738e-06 deg
node 65.89718595551706 0.00043712 deg
peri 217.7097104266722 0.00046547 deg
M 286.5456617683525 0.00016222 deg
tp 2459534.281588747441
(2021-Nov-15.78158875)
0.00073834 TDB
period 1635.864876627637
4.48
2.0705e-05
5.669e-08
d
yr
n .2200670759201983 2.7854e-09 deg/d
Q 2.77052267727743 2.3378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      2000-10-21  
   last obs. used      2020-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:29  

Additional Information
 Earth MOID = 1.64528 au 
 Jupiter MOID = 2.23248 au 
 T_jup = 3.360 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.60   n/a E2021B55  
diameter diameter 3.038 km 1.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227872 (2007 EP8)          Discovered 2007-Mar-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2007 EP8 = 2004 RK19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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