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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05212893846725878 1.2505e-08  
a 2.841086907705746 1.3006e-08 au
q 2.692984063113819 4.0459e-08 au
i 2.982720771386592 7.6426e-07 deg
node 65.34014168615043 2.4898e-05 deg
peri 237.4555427446356 4.0696e-05 deg
M 224.9805349334953 3.3282e-05 deg
tp 2459856.523032416999
(2022-Oct-04.02303242)
0.00016285 TDB
period 1749.142551807575
4.79
1.2011e-05
3.288e-08
d
yr
n .2058151290344939 1.4133e-09 deg/d
Q 2.989189752297674 1.3684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2155  
   data-arc span      16560 days (45.34 yr)  
   first obs. used      1975-11-02  
   last obs. used      2021-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48371  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:52:06  

Additional Information
 Earth MOID = 1.67704 au 
 Jupiter MOID = 2.12178 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 13.35   n/a E2021B10  
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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