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11907 Naranen (1992 ER8)
Classification: Main-belt Asteroid          SPK-ID: 2011907
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05205169778389836 3.7486e-08  
a 2.841439456562891 1.5227e-08 au
q 2.693537708698635 1.0401e-07 au
i 2.982788616032416 4.1348e-06 deg
node 65.34668970818784 8.3753e-05 deg
peri 237.2792701182198 9.5515e-05 deg
M 184.0046108803903 4.7014e-05 deg
tp 2459855.773126485379
(2022-Oct-03.27312649)
0.00022905 TDB
period 1749.468137062859
4.79
1.4063e-05
3.85e-08
d
yr
n .2057768257525373 1.6541e-09 deg/d
Q 2.989341204427147 1.6019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      16134 days (44.17 yr)  
   first obs. used      1975-11-02  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:38:10  

Additional Information
 Earth MOID = 1.67955 au 
 Jupiter MOID = 2.12214 au 
 T_jup = 3.305 
[ 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 13.3   n/a MPO332931  
diameter diameter 5.428 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.345   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11907 Näränen           Discovered 1992 Mar. 2 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets.
Jyri Näränen (b. 1979) is a Finnish astronomer who works on the surface composition and structure of Mercury and the moon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

Alternate Designations
 1992 ER8 = 1975 VL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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