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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09759636849133246 3.6823e-08  
a 3.112255983656937 1.3902e-08 au
q 2.8085111018366 1.1661e-07 au
i 19.09007632176787 3.9007e-06 deg
node 144.8418055091838 1.2544e-05 deg
peri 213.8248636247521 2.5029e-05 deg
M 238.2372117399257 2.3901e-05 deg
tp 2459678.802591767179
(2022-Apr-09.30259177)
0.00013535 TDB
period 2005.447941243092
5.49
1.3437e-05
3.679e-08
d
yr
n .1795110172627325 1.2028e-09 deg/d
Q 3.416000865477273 1.5259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2999  
   data-arc span      40773 days (111.63 yr)  
   first obs. used      1909-02-20  
   last obs. used      2020-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:51  

Additional Information
 Earth MOID = 1.81812 au 
 Jupiter MOID = 2.01508 au 
 T_jup = 3.127 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456488.5 (2013-Jul-15.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .097250403695107 3.6848e-08  
q 2.809663414653748 1.166e-07 au
tp 2455673.283046131129
(2011-Apr-21.78304613)
0.00012496 TDB
node 144.8633031438897 1.2548e-05 deg
peri 214.9407281677221 2.5091e-05 deg
i 19.08657372565027 3.9e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2999  
   data-arc span      40773 days (111.63 yr)  
   first obs. used      1909-02-20  
   last obs. used      2020-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:51  

Additional Information
 Jupiter MOID = 2.01508 au 
 T_jup = 3.127 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.357758651142453E-15 -4.271587343952994E-15 -2.470032642287087E-14 -2.789040751998651E-15 1.62519596865254E-14 1.722313586879285E-15
q -4.271587343952994E-15 1.359468216859517E-14 5.490571361401545E-13 1.103864522065404E-14 3.67571030320247E-14 -3.663367087435684E-15
tp -2.470032642287087E-14 5.490571361401545E-13 1.561463959503467E-8 -2.233023872503493E-12 2.74169204012569E-9 9.267455936977498E-12
node -2.789040751998651E-15 1.103864522065404E-14 -2.233023872503493E-12 1.574512453352033E-10 -1.484125283958823E-10 3.545473819167333E-12
peri 1.62519596865254E-14 3.67571030320247E-14 2.74169204012569E-9 -1.484125283958823E-10 6.295475863993056E-10 -1.497330542149667E-12
i 1.722313586879285E-15 -3.663367087435684E-15 9.267455936977498E-12 3.545473819167333E-12 -1.497330542149667E-12 1.521011636504799E-11

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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