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JPL Small-Body Database Browser
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457 Alleghenia (A900 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709699867361446 4.0734e-08  
a 3.097001888148376 1.2503e-08 au
q 2.567507516409834 1.2785e-07 au
i 12.97503185741017 4.0913e-06 deg
node 249.4459112765794 1.9487e-05 deg
peri 130.3748099569649 2.2949e-05 deg
M 282.8609625172668 1.3007e-05 deg
tp 2459027.062179623113
(2020-Jun-26.56217962)
7.2796e-05 TDB
period 1990.722073745011
5.45
1.2055e-05
3.3e-08
d
yr
n .1808389050123689 1.0951e-09 deg/d
Q 3.626496259886919 1.4641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2306  
   data-arc span      43535 days (119.19 yr)  
   first obs. used      1900-09-15  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41891  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:07:38  

Additional Information
 Earth MOID = 1.59286 au 
 Jupiter MOID = 1.91623 au 
 T_jup = 3.162 
[ show covariance matrix ]

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 11.1   n/a MPO448915  
diameter diameter 18.739 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 21.953 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Alvarez, E.A.; Pilcher, F. (2015) Minor Planet Bull. 42, 30.]
geometric albedo albedo 0.208   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

457 Alleghenia (A900 RA)          Discovered 1900-Sep-15 by Wolf, M. and Schwassmann, A. at Heidelberg
Discovery telegram gave only Sept. 16 observation.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A900 RA = 1938 SA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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