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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870062762770654 5.8191e-08  
a 3.155761604915835 2.3141e-08 au
q 2.565614378362389 1.8279e-07 au
i 3.613583862164012 5.5999e-06 deg
node 222.4473985208968 9.5036e-05 deg
peri 124.0555665947991 9.6171e-05 deg
M 180.8090973965853 1.5733e-05 deg
tp 2458619.720534895771
(2019-May-16.22053490)
9.5504e-05 JED
period 2047.645205373755
5.61
2.2523e-05
6.166e-08
d
yr
n .17581170754349 1.9338e-09 deg/d
Q 3.745908831469281 2.7469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      27216 days (74.51 yr)  
   first obs. used      1941-09-23  
   last obs. used      2016-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46224  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:45:52  

Additional Information
 Earth MOID = 1.56013 au 
 Jupiter MOID = 1.6996 au 
 T_jup = 3.176 
[ 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. 2016-February); 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. (2016) Astron. J. 150, A75.]

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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