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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09759636986434794 3.6983e-08  
a 3.112255984103427 1.3944e-08 au
q 2.808511097966339 1.1701e-07 au
i 19.09007614124329 3.941e-06 deg
node 144.8418053673058 1.255e-05 deg
peri 213.8248635506814 2.5038e-05 deg
M 238.2372117538796 2.3903e-05 deg
tp 2459678.802591835412
(2022-Apr-09.30259184)
0.00013536 TDB
period 2005.44794167465
5.49
1.3477e-05
3.69e-08
d
yr
n .179511017224103 1.2064e-09 deg/d
Q 3.416000870240515 1.5304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2926  
   data-arc span      40707 days (111.45 yr)  
   first obs. used      1909-02-20  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:22:04  

Additional Information
 Earth MOID = 1.81812 au 
 Jupiter MOID = 2.01508 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-August); 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

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