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819 Barnardiana (A916 EA)
Classification: Main-belt Asteroid          SPK-ID: 2000819
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418121556337401 1.4536e-08  
a 2.19730962320417 4.3969e-09 au
q 1.885704408942826 3.1162e-08 au
i 4.896507121409873 1.009e-06 deg
node 333.1187438434571 1.0225e-05 deg
peri 306.5055974135021 9.9539e-06 deg
M 306.9682637514225 9.7447e-06 deg
tp 2459375.754290412360
(2021-Jun-10.25429041)
3.2384e-05 TDB
period 1189.694115476784
3.26
3.5709e-06
9.777e-09
d
yr
n .3025987901568513 9.0826e-10 deg/d
Q 2.508914837465515 5.0204e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3479  
   data-arc span      42519 days (116.41 yr)  
   first obs. used      1904-09-19  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41417  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:29:45  

Additional Information
 Earth MOID = .872411 au 
 Jupiter MOID = 2.62403 au 
 T_jup = 3.650 
[ 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 11.98   n/a E2021B10  
diameter diameter 8.917 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 66.70 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Alvarez, E.M. (2011) Minor Planet Bull. 38, 180-181.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.277   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

819 Barnardiana (A916 EA)          Discovered 1916-Mar-03 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 EA = 1930 QX = 1955 EB = A904 SC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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