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 ]  
21198 (1994 PX7)
Classification: Main-belt Asteroid          SPK-ID: 2021198
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023733694830786 3.5999e-08  
a 2.779572284494559 1.4937e-08 au
q 2.495018104009072 1.0614e-07 au
i 1.87009091350187 3.7315e-06 deg
node 295.4824346292635 0.00011613 deg
peri 45.09186126988872 0.00011767 deg
M 278.9796046508254 2.0466e-05 deg
tp 2459777.440583845436
(2022-Jul-16.94058385)
9.704e-05 TDB
period 1692.643063432718
4.63
1.3644e-05
3.736e-08
d
yr
n .2126851240981144 1.7144e-09 deg/d
Q 3.064126464980045 1.6466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      10724 days (29.36 yr)  
   first obs. used      1992-02-28  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49991  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:58:30  

Additional Information
 Earth MOID = 1.48597 au 
 Jupiter MOID = 2.28062 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457567.5 (2016-Jun-28.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1010047257533156 3.6001e-08  
q 2.500004417104348 1.0596e-07 au
tp 2458083.387398226621
(2017-Nov-25.88739823)
9.5414e-05 TDB
node 295.5194644239924 0.00011614 deg
peri 44.9057209791825 0.00011772 deg
i 1.869554886888435 3.7307e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      10724 days (29.36 yr)  
   first obs. used      1992-02-28  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49991  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:58:30  

Additional Information
 Jupiter MOID = 2.28062 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.2960657402831E-15 -3.788684666753915E-15 -2.526983708119559E-13 -9.277688050636474E-16 -2.435647176972421E-14 4.558000286290634E-17
q -3.788684666753915E-15 1.122772599866775E-14 8.815832872694472E-13 4.046349821549936E-16 9.18585619902137E-14 -3.801313914191995E-18
tp -2.526983708119559E-13 8.815832872694472E-13 9.103786314315164E-9 1.053807006964655E-11 1.8496657301031E-9 4.303334562601973E-13
node -9.277688050636474E-16 4.046349821549936E-16 1.053807006964655E-11 1.348848639674673E-8 -1.347899712623308E-8 -9.695479530056891E-12
peri -2.435647176972421E-14 9.18585619902137E-14 1.8496657301031E-9 -1.347899712623308E-8 1.385825194301252E-8 9.782842482481325E-12
i 4.558000286290634E-17 -3.801313914191995E-18 4.303334562601973E-13 -9.695479530056891E-12 9.782842482481325E-12 1.391826785419838E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.10   n/a MPO636382  

21198 (1994 PX7)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PX7 = 1999 TZ122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 09:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin