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1516 Henry (1938 BG)
Classification: Main-belt Asteroid          SPK-ID: 2001516
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1860256105941666 4.4828e-08  
a 2.62196995310286 7.4723e-09 au
q 2.134216391617342 1.1754e-07 au
i 8.749266085098901 3.4498e-06 deg
node 125.8186828738438 3.2747e-05 deg
peri 94.37844938254804 3.3898e-05 deg
M 89.06129196695366 8.8456e-06 deg
tp 2458616.857702820015
(2019-May-13.35770282)
3.7979e-05 TDB
period 1550.743582700787
4.25
6.6291e-06
1.815e-08
d
yr
n .2321466966015241 9.9238e-10 deg/d
Q 3.109723514588378 8.8623e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2293  
   data-arc span      30084 days (82.37 yr)  
   first obs. used      1938-01-28  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47342  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:32:23  

Additional Information
 Earth MOID = 1.14788 au 
 Jupiter MOID = 1.9343 au 
 T_jup = 3.363 
[ 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 12.0   n/a MPO492768  
diameter diameter 26.442 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 17.599 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Polakis, T. (2019) Minor Planet Bull. 46-4, in press.]
geometric albedo albedo 0.039   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1516 Henry (1938 BG)          Discovered 1938-Jan-28 by Patry, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 BG = 1938 DM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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