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5446 Heyler (1991 PB13)
Classification: Outer Main-belt Asteroid          SPK-ID: 2005446
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310394446435293 3.4217e-08  
a 3.219965191307495 2.1239e-08 au
q 2.798022740867066 1.1141e-07 au
i 2.37307853144845 3.7036e-06 deg
node 100.5393733472829 0.00010461 deg
peri 332.56081652 0.00010585 deg
M 201.8411224567187 1.5337e-05 deg
tp 2459527.684719359833
(2021-Nov-09.18471936)
9.0167e-05 TDB
period 2110.450606088786
5.78
2.088e-05
5.717e-08
d
yr
n .1705796851920518 1.6877e-09 deg/d
Q 3.641907641747925 2.4022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2223  
   data-arc span      14204 days (38.89 yr)  
   first obs. used      1980-10-13  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5049  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:50:27  

Additional Information
 Earth MOID = 1.81297 au 
 Jupiter MOID = 1.62288 au 
 T_jup = 3.174 
[ 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 12.3   n/a MPO328729  
diameter diameter 18.883 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.985 h n/a LCDB (Rev. 2019-January); 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:
[Michalik, D.; Ditteon, R. (2016) Minor Planet Bull. 43, 202-203.]
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5446 Heyler           Discovered 1991 Aug. 5 by H. E. Holt at Palomar.
Named in honor of Gene A. Heyler (b. 1956), spacecraft attitude control expert at the Applied Physics Laboratory of Johns Hopkins University. Heyler has been responsible for developing innovative techniques for tracking minor planets during fast flybys. These techniques played a major role in the success of the NEAR flyby of (253) Mathilde in June 1997. Name suggested and citation provided by J. Veverka.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1991 PB13 = 1980 TG9 = 1982 BO14 = 1986 WX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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