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 ]  
71678 (2000 ET172)
Classification: Main-belt Asteroid          SPK-ID: 2071678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07106796431049492 4.7398e-08  
a 2.948706732895756 1.8255e-08 au
q 2.739148148040205 1.3815e-07 au
i .8709114390427717 4.9972e-06 deg
node 349.4904352944241 0.00031515 deg
peri 67.16610575316759 0.0003179 deg
M 79.33833025236245 3.9309e-05 deg
tp 2458592.907340183999
(2019-Apr-19.40734018)
0.00020189 TDB
period 1849.463645970684
5.06
1.7175e-05
4.702e-08
d
yr
n .1946510280341604 1.8076e-09 deg/d
Q 3.158265317751308 1.9552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      9212 days (25.22 yr)  
   first obs. used      1995-01-29  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:46:16  

Additional Information
 Earth MOID = 1.75104 au 
 Jupiter MOID = 2.08509 au 
 T_jup = 3.266 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457103.5 (2015-Mar-22.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06880280148540545 4.6976e-08  
q 2.74861059454881 1.3646e-07 au
tp 2456749.395542562382
(2014-Apr-01.89554256)
0.00021107 TDB
node 349.5595539835417 0.00031415 deg
peri 68.48234706113971 0.00031711 deg
i .873616286040078 4.9949e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      9212 days (25.22 yr)  
   first obs. used      1995-01-29  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:46:16  

Additional Information
 Jupiter MOID = 2.08509 au 
 T_jup = 3.266 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.206706795311309E-15 -6.36119732150265E-15 -1.70106240445072E-12 -3.19593404607494E-15 -4.2800509764259E-13 -9.13758618660296E-17
q -6.36119732150265E-15 1.862238992479755E-14 4.551322748951792E-12 1.090265735313169E-14 1.169416870331866E-12 3.783859602907803E-16
tp -1.70106240445072E-12 4.551322748951792E-12 4.454888079208456E-8 -8.066959865661139E-11 9.149140565928892E-9 -1.786834323913749E-12
node -3.19593404607494E-15 1.090265735313169E-14 -8.066959865661139E-11 9.869011541855606E-8 -9.869490082680745E-8 -1.083389487477126E-10
peri -4.2800509764259E-13 1.169416870331866E-12 9.149140565928892E-9 -9.869490082680745E-8 1.005615476628091E-7 1.07982020679481E-10
i -9.13758618660296E-17 3.783859602907803E-16 -1.786834323913749E-12 -1.083389487477126E-10 1.07982020679481E-10 2.494937446466607E-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 15.6   n/a MPO236702  

71678 (2000 ET172)          Discovered 2000-Mar-01 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-03 04:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin