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15938 Bohnenblust (1997 YA8)
Classification: Main-belt Asteroid          SPK-ID: 2015938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2093103592172569 4.4878e-08  
a 2.453808717705616 1.0703e-08 au
q 1.940201133552217 1.0838e-07 au
i 11.93544508867121 4.5777e-06 deg
node 251.3427483109664 1.8925e-05 deg
peri 317.9414176066402 2.0716e-05 deg
M 224.4372592522648 1.1082e-05 deg
tp 2459529.185408615168
(2021-Nov-10.68540862)
4.528e-05 TDB
period 1403.975355261031
3.84
9.1855e-06
2.515e-08
d
yr
n .2564147573182065 1.6776e-09 deg/d
Q 2.967416301859015 1.2943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      24098 days (65.98 yr)  
   first obs. used      1954-11-23  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:01:21  

Additional Information
 Earth MOID = .950289 au 
 Jupiter MOID = 2.08262 au 
 T_jup = 3.435 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456649.5 (2013-Dec-23.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208995659803381 4.4925e-08  
q 1.940773268604628 1.0843e-07 au
tp 2456721.589315464768
(2014-Mar-05.08931546)
3.6854e-05 TDB
node 251.3691979970751 1.8936e-05 deg
peri 317.9613018386164 2.0725e-05 deg
i 11.93157937449475 4.5768e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      24098 days (65.98 yr)  
   first obs. used      1954-11-23  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:01:21  

Additional Information
 Jupiter MOID = 2.08262 au 
 T_jup = 3.435 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.018242238689407E-15 -4.857093540941655E-15 4.565980344679791E-13 1.481812133605907E-14 6.821515162371238E-14 7.551180712534866E-16
q -4.857093540941655E-15 1.175705879208592E-14 -1.038814099929883E-12 -3.778917083521531E-14 -1.515726561162713E-13 -1.817963687241748E-15
tp 4.565980344679791E-13 -1.038814099929883E-12 1.35818164606844E-9 2.351891472742965E-12 3.247616458733126E-10 -7.213122080153682E-13
node 1.481812133605907E-14 -3.778917083521531E-14 2.351891472742965E-12 3.585542046815766E-10 -3.498434820148759E-10 -1.997156489517076E-11
peri 6.821515162371238E-14 -1.515726561162713E-13 3.247616458733126E-10 -3.498434820148759E-10 4.2952823405935E-10 1.927172467029439E-11
i 7.551180712534866E-16 -1.817963687241748E-15 -7.213122080153682E-13 -1.997156489517076E-11 1.927172467029439E-11 2.094699415010316E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO452396  
diameter diameter 4.782 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.906 h n/a LCDB (Rev. 2020-October); 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:
[Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bull. 37, 152-158.]
geometric albedo albedo 0.310   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

15938 Bohnenblust           Discovered 1997 Dec. 27 by P. G. Comba at Prescott.
H. Frederic Bohnenblust (1906-2000) was a Swiss-American mathematician who held professorships at Princeton and later at Caltech, where he became dean of graduate studies. A great teacher and a strong advocate of mathematical education, he was the discoverer's thesis adviser.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1997 YA8 = 1991 LQ1 = 1991 NH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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