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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455623.5 (2011-Mar-03.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09663514193561641 4.2373e-08  
q 2.814842202928744 1.3044e-07 au
tp 2455679.731617304934
(2011-Apr-28.23161730)
0.00013414 TDB
node 145.0262155251912 1.2874e-05 deg
peri 216.2238724245012 2.7063e-05 deg
i 19.09084893795623 5.1466e-06 deg
  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
 Jupiter MOID = 2.01242 au 
 T_jup = 3.127 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.79550854338672E-15 -5.494035221189383E-15 -8.937501760890437E-13 -3.477768345069986E-15 -1.666248963225323E-13 1.006702273294757E-15
q -5.494035221189383E-15 1.701386843750967E-14 2.837293048938452E-12 1.21521912535628E-14 5.23966654938526E-13 -2.796537036835569E-15
tp -8.937501760890437E-13 2.837293048938452E-12 1.799392156394896E-8 4.766591486738674E-12 3.215818821719304E-9 -4.560590389131339E-12
node -3.477768345069986E-15 1.21521912535628E-14 4.766591486738674E-12 1.657391006706676E-10 -1.549349470894662E-10 -1.698049813480187E-12
peri -1.666248963225323E-13 5.23966654938526E-13 3.215818821719304E-9 -1.549349470894662E-10 7.324147437369073E-10 7.607631584294753E-13
i 1.006702273294757E-15 -2.796537036835569E-15 -4.560590389131339E-12 -1.698049813480187E-12 7.607631584294753E-13 2.648719762433712E-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-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

[ 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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