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 ]  
173138 (1995 QZ4)
Classification: Main-belt Asteroid          SPK-ID: 2173138
[ 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1926526108584422 4.965e-08  
a 2.293529466132036 9.0698e-09 au
q 1.85167502640093 1.1561e-07 au
i 5.713637634223629 5.7449e-06 deg
node 288.0470881476928 5.3745e-05 deg
peri 329.9168824311024 5.6229e-05 deg
M 342.4143356150564 1.4457e-05 deg
tp 2458662.474237600041
(2019-Jun-27.97423760)		 5.0972e-05 TDB
period 1268.68823648861
3.47		 7.5256e-06
2.06e-08		 d
yr
n .2837576558575051 1.6832e-09 deg/d
Q 2.735383905863142 1.0817e-08 au
   Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      8842 days (24.21 yr)  
   first obs. used      1995-06-05  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64557  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:58  

Additional Information
 Earth MOID = .838659 au 
 Jupiter MOID = 2.34341 au 
 T_jup = 3.565 
[ 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 16.8   n/a MPO433112  

173138 (1995 QZ4)          Discovered 1995-Aug-22 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1995 QZ4 = 2002 QZ2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-21 05:49 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin