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JPL Small-Body Database Browser
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780 Armenia (A914 BJ)
Classification: Main-belt Asteroid          SPK-ID: 2000780
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0974090467633008 4.2352e-08  
a 3.112408281099882 1.6064e-08 au
q 2.809231557299739 1.304e-07 au
i 19.08924533940182 5.1472e-06 deg
node 144.8404341020155 1.2882e-05 deg
peri 213.9767913711938 2.6908e-05 deg
M 166.2475609398824 2.4626e-05 deg
tp 2457674.318607088435
(2016-Oct-12.81860709)
0.00013533 TDB
period 2005.595147159694
5.49
1.5527e-05
4.251e-08
d
yr
n .1794978415807541 1.3896e-09 deg/d
Q 3.415585004900026 1.7628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2359  
   data-arc span      40256 days (110.21 yr)  
   first obs. used      1909-02-20  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42689  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:13:38  

Additional Information
 Earth MOID = 1.8181 au 
 Jupiter MOID = 2.01242 au 
 T_jup = 3.127 
[ 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 9.0   n/a MPO435702  
diameter diameter 126.263 km 0.759 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.891 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pilcher, F. (2009) Minor Planet Bull. 36, 167-168.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.028   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

780 Armenia (A914 BJ)          Discovered 1914-Jan-25 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A914 BJ = A909 DE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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