Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
17601 Sheldonschafer (1995 SS)
Classification: Inner Main-belt Asteroid          SPK-ID: 2017601
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06433968586742628 2.3009e-08  
a 1.81968482080686 4.0937e-09 au
q 1.702606871058423 4.3018e-08 au
i 24.19768188370011 9.6573e-07 deg
node 225.1700868921161 1.7323e-06 deg
peri 46.93155997121445 6.9321e-06 deg
M 266.4578643913611 8.906e-06 deg
tp 2459629.468640565804
(2022-Feb-18.96864057)
2.2721e-05 TDB
period 896.5875116918332
2.45
3.0256e-06
8.284e-09
d
yr
n .4015224340128171 1.355e-09 deg/d
Q 1.936762770555297 4.3571e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      9333 days (25.55 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:24:15  

Additional Information
 Earth MOID = .719049 au 
 Jupiter MOID = 3.09114 au 
 T_jup = 3.936 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457241.5 (2015-Aug-07.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06458511923836942 2.2992e-08  
q 1.702036732684009 4.2997e-08 au
tp 2456940.062107995082
(2014-Oct-09.56210800)
1.7639e-05 TDB
node 225.1974301616974 1.7319e-06 deg
peri 46.98698626227792 6.9298e-06 deg
i 24.19866979996381 9.6582e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      9333 days (25.55 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:24:15  

Additional Information
 Jupiter MOID = 3.09114 au 
 T_jup = 3.936 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.286336953658193E-16 -9.849399809646998E-16 -1.371867724559661E-13 5.848644517733541E-15 -5.712160090143082E-14 9.512872459081128E-15
q -9.849399809646998E-16 1.848752314322702E-15 2.75577895772655E-13 -1.087146307280557E-14 1.153396916155216E-13 -1.755198540548531E-14
tp -1.371867724559661E-13 2.75577895772655E-13 3.111372720995046E-10 -5.336552064542529E-12 1.186709812353111E-10 -1.648874457112327E-12
node 5.848644517733541E-15 -1.087146307280557E-14 -5.336552064542529E-12 2.999519166797968E-12 -4.681948433921196E-12 1.0546467178689E-12
peri -5.712160090143082E-14 1.153396916155216E-13 1.186709812353111E-10 -4.681948433921196E-12 4.802177965776839E-11 -1.733431011891623E-12
i 9.512872459081128E-15 -1.755198540548531E-14 -1.648874457112327E-12 1.0546467178689E-12 -1.733431011891623E-12 9.328010958248724E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.37   n/a E2021B10  

17601 Sheldonschafer           Discovered 1995 Sept. 19 by T. B. Spahr at the Catalina Station.
Sheldon Schafer (b. 1948), vice-president of education for the Lakeview Museum in Peoria, Illinois, has touched the lives of over 500~000 students during his 34 years at the Lakeview Planetarium. He oversaw the construction of the world's largest "complete" model of the solar system, recognized in the Guinness Book of Records.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-18 21:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin