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
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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06448533900006195 3.7091e-08  
a 1.81947619718931 4.5841e-09 au
q 1.702146657811014 6.8818e-08 au
i 24.19970616145959 5.1408e-06 deg
node 225.1776588639869 8.9841e-06 deg
peri 46.81768684336608 3.9498e-05 deg
M 107.5640118907845 3.7245e-05 deg
tp 2458732.655652392454
(2019-Sep-06.15565239)
9.2904e-05 TDB
period 896.4333278738337
2.45
3.3878e-06
9.275e-09
d
yr
n .4015914946556598 1.5177e-09 deg/d
Q 1.936805736567607 4.8797e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      9080 days (24.86 yr)  
   first obs. used      1995-09-19  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:14:17  

Additional Information
 Earth MOID = .718098 au 
 Jupiter MOID = 3.09333 au 
 T_jup = 3.936 
[ 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 15.4   n/a MPO492944  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2165-Apr-16 18:35 00:01 Iris 0.0340343549050934 0.0340313663847094 0.034037352599244 8.62389835473983 8.62389833515355 2511916.274312109 1.074833952045 903.696110124417 22.5855192336015 -80.6019590754492 222376.548322884 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:14:29 2020-Aug-25 01:14
2172-Aug-31 18:30 00:01 Iris 0.0468189213320037 0.0468069850502375 0.0468308621484965 8.53830459342374 8.53830457904304 2514610.271138794 1.25518393807486 939.6217600413 22.4920126539711 50.7109581842061 241024.814452512 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:14:29 2020-Aug-25 01:14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-01 14:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin