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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09759638555270647 3.903e-08  
a 3.112255989187829 1.4548e-08 au
q 2.808511053728334 1.2216e-07 au
i 19.09007449922565 4.5078e-06 deg
node 144.8418055988733 1.2562e-05 deg
peri 213.8248578188244 2.546e-05 deg
M 238.2372147364621 2.4047e-05 deg
tp 2459678.802576882558
(2022-Apr-09.30257688)
0.00013601 TDB
period 2005.447946589012
5.49
1.4062e-05
3.85e-08
d
yr
n .1795110167842102 1.2587e-09 deg/d
Q 3.416000924647324 1.5968e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      40611 days (111.19 yr)  
   first obs. used      1909-02-20  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41635  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:12:41  

Additional Information
 Earth MOID = 1.81812 au 
 Jupiter MOID = 2.01508 au 
 T_jup = 3.127 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456074.5 (2012-May-27.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09716658044787214 3.9019e-08  
q 2.81255045461331 1.2253e-07 au
tp 2455675.872856980539
(2011-Apr-24.37285698)
0.0001272 TDB
node 144.8882315471581 1.2571e-05 deg
peri 215.4958313652126 2.557e-05 deg
i 19.07622428901424 4.5055e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      40611 days (111.19 yr)  
   first obs. used      1909-02-20  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41635  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:12:41  

Additional Information
 Jupiter MOID = 2.01508 au 
 T_jup = 3.127 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.522482614791488E-15 -4.752750148222064E-15 -3.167986543448748E-13 -2.668463568462369E-15 -4.763456867619951E-14 7.834724981665315E-16
q -4.752750148222064E-15 1.501273727566887E-14 1.363291049239653E-12 7.794446591309175E-15 2.166486502654382E-13 -1.943315616378655E-15
tp -3.167986543448748E-13 1.363291049239653E-12 1.618018889092321E-8 -2.264924555173922E-12 2.856181457305854E-9 4.135493279357104E-12
node -2.668463568462369E-15 7.794446591309175E-15 -2.264924555173922E-12 1.580401192680614E-10 -1.491551721604251E-10 3.247409468699352E-12
peri -4.763456867619951E-14 2.166486502654382E-13 2.856181457305854E-9 -1.491551721604251E-10 6.53813976177009E-10 -2.145747146650317E-12
i 7.834724981665315E-16 -1.943315616378655E-15 4.135493279357104E-12 3.247409468699352E-12 -2.145747146650317E-12 2.029930013588708E-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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