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3940 Larion (1973 FE1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2003940
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05647495315776025 1.3979e-08  
a 1.987844012600935 4.6564e-09 au
q 1.875580615104363 2.7764e-08 au
i 22.83404941880463 9.0513e-07 deg
node 194.6961721209679 1.114e-06 deg
peri 304.2670056665532 1.6106e-05 deg
M 52.88301370051853 1.4924e-05 deg
tp 2459050.121559752055
(2020-Jul-19.62155975)
4.2339e-05 TDB
period 1023.698059188511
2.80
3.597e-06
9.848e-09
d
yr
n .3516661937264716 1.2356e-09 deg/d
Q 2.100107410097507 4.9194e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2695  
   data-arc span      25457 days (69.70 yr)  
   first obs. used      1951-07-08  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36243  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:19:14  

Additional Information
 Earth MOID = .912734 au 
 Jupiter MOID = 2.90452 au 
 T_jup = 3.755 
[ 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 12.84   n/a E2021B10  
diameter diameter 5.079 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 84. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.]
geometric albedo albedo 0.566   0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3940 Larion (1973 FE1)          Discovered 1973-Mar-27 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1973 FE1 = 1976 JE3 = 1987 HC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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