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3866 Langley (1988 BH4)
Classification: Main-belt Asteroid          SPK-ID: 2003866
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1894837508804674 6.332e-08  
a 3.146372063256105 2.5002e-08 AU
q 2.550185683044823 2.0243e-07 AU
i 3.609455559971804 6.9478e-06 deg
node 222.786896758325 9.6788e-05 deg
peri 122.998131557823 9.8618e-05 deg
M 75.84582056768505 1.6522e-05 deg
tp 2456571.020245349151
(2013-Oct-05.52024535)
9.2674e-05 JED
period 2038.51326964455
5.58
2.4298e-05
6.652e-08
d
yr
n .176599291925518 2.105e-09 deg/d
Q 3.742558443467387 2.974e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1237  
   data-arc span      26837 days (73.48 yr)  
   first obs. used      1941-09-23  
   last obs. used      2015-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47621  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:15:58  

Additional Information
 Earth MOID = 1.54584 AU 
 T_jup = 3.178 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7 mag n/a MPO332854  
rotation period rot_per 9.4995 h n/a LCDB (Rev. 2015-July); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

3866 Langley           Discovered 1988 Jan. 20 by H. Debehogne at the European Southern Observatory.
Samuel Pierpont Langley (1834-1906), third secretary of the Smithsonian Institution, was founder of its Astrophysical Observatory. While Allegheny Observatory director he invented a bolometer. He developed a working wing and in 1896 conducted the first successful flight of an unmanned, heavier-than-air flying machine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

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Alternate Designations
 1988 BH4 = 1941 SD2 = 1964 XK = 1975 XC7 = 1975 YN = 1977 CO1 = 1980 TU9 = 1983 AL2 = 1985 OJ = 1986 XZ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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