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JPL Small-Body Database Browser
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15412 Schaefer (1998 AU3)
Classification: Main-belt Asteroid          SPK-ID: 2015412
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985640108063939 4.6806e-08  
a 3.168778216479097 1.7078e-08 au
q 2.539572904459076 1.5292e-07 au
i 2.885598950290091 3.7894e-06 deg
node 99.39488407308421 0.00010252 deg
peri 294.1393140764534 0.00010298 deg
M 328.1756394942545 9.3453e-06 deg
tp 2458782.634986300707
(2019-Oct-26.13498630)
5.3703e-05 TDB
period 2060.32718415243
5.64
1.6656e-05
4.56e-08
d
yr
n .1747295297412171 1.4125e-09 deg/d
Q 3.797983528499118 2.0469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      14686 days (40.21 yr)  
   first obs. used      1979-09-20  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52244  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:58:46  

Additional Information
 Earth MOID = 1.54708 au 
 Jupiter MOID = 1.64021 au 
 T_jup = 3.170 
[ 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 13.6   n/a MPO502287  
diameter diameter 10.533 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.110   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15412 Schaefer           Discovered 1998 Jan. 2 by Spacewatch at Kitt Peak.
John P. Schaefer (b. 1934), founder, in association with Ansel Adams, of the Center for Creative Photography of the University of Arizona, was president of the university during 1971-1982, including the time of formation of the department of planetary sciences. He has also served as president of the Research Corporation.
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

[ show close-approach data ]
Alternate Designations
 1998 AU3 = 1979 SF13 = 1996 TG63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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