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4301 Boyden (1966 PM)
Classification: Main-belt Asteroid          SPK-ID: 2004301
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117406724739254 3.6472e-08  
a 3.115411830736436 1.678e-08 au
q 2.767293617736724 1.0799e-07 au
i 2.282801003347279 3.8086e-06 deg
node 52.12658342799703 9.8867e-05 deg
peri 101.7333132241283 0.00010036 deg
M 99.6021972137416 1.7097e-05 deg
tp 2458444.803012642771
(2018-Nov-22.30301264)
9.5148e-05 TDB
period 2008.499019547758
5.50
1.6227e-05
4.443e-08
d
yr
n .1792383249861178 1.4481e-09 deg/d
Q 3.463530043736148 1.8655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2033  
   data-arc span      25081 days (68.67 yr)  
   first obs. used      1951-11-28  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:14:19  

Additional Information
 Earth MOID = 1.77862 au 
 Jupiter MOID = 1.52643 au 
 T_jup = 3.207 
[ 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 12.6   n/a MPO473825  
diameter diameter 13.931 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.642 h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.120   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4301 Boyden           Discovered 1966 Aug. 7 at Bloemfontein.
Massachusetts mechanical engineer Uriah Atherton Boyden (1804-1879) designed an improved turbine waterwheel for use in textile mills. His bequest to build a new observatory at a mountain site allowed the Harvard College Observatory to establish the Boyden Observatory at Arequipa. It moved to Bloemfontein in 1927.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1966 PM = 1975 EE2 = 1978 TL2 = 1979 YZ7 = 1986 ER 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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