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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
173142 (1995 SJ57)
Classification: Main-belt Asteroid          SPK-ID: 2173142
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640462448251826 4.5876e-08  
a 2.38246511990234 1.2418e-08 au
q 1.991630663555383 1.0902e-07 au
i 1.368579828677764 5.5619e-06 deg
node 229.3634139552678 0.00023095 deg
peri 255.8227838112303 0.0002317 deg
M 32.76784816004164 1.759e-05 deg
tp 2458478.240201596844
(2018-Dec-25.74020160)
6.5537e-05 TDB
period 1343.192485822364
3.68
1.0501e-05
2.875e-08
d
yr
n .268018175950107 2.0954e-09 deg/d
Q 2.773299576249298 1.4455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      8574 days (23.47 yr)  
   first obs. used      1995-09-18  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63087  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:18:31  

Additional Information
 Earth MOID = 1.00795 au 
 Jupiter MOID = 2.29381 au 
 T_jup = 3.519 
[ 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 17.4   n/a MPO417932  

173142 (1995 SJ57)          Discovered 1995-Sep-21 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1995 SJ57 = 1999 TL84 = 2001 HR25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-10 16:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin