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 ]  
85676 (1998 RT2)
Classification: Main-belt Asteroid          SPK-ID: 2085676
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356750239300902 4.7853e-08  
a 2.430390315448174 9.9962e-09 au
q 2.100647051240284 1.1898e-07 au
i .6659267731173878 4.8699e-06 deg
node 200.462909128142 0.00041705 deg
peri 323.3133857042134 0.00041741 deg
M 97.92256556523 1.7423e-05 deg
tp 2458624.062614446299
(2019-May-20.56261445)
6.636e-05 TDB
period 1383.924716607419
3.79
8.5381e-06
2.338e-08
d
yr
n .2601297568284721 1.6049e-09 deg/d
Q 2.760133579656065 1.1352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      7947 days (21.76 yr)  
   first obs. used      1998-09-13  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:10  

Additional Information
 Earth MOID = 1.10836 au 
 Jupiter MOID = 2.21558 au 
 T_jup = 3.495 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456639.5 (2013-Dec-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1361012116411979 4.7709e-08  
q 2.098202981288901 1.1875e-07 au
tp 2457240.836666485029
(2015-Aug-06.33666648)
6.4471e-05 TDB
node 200.5777127649736 0.00041767 deg
peri 323.1016794940689 0.00041804 deg
i .6651801095080838 4.8697e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      7947 days (21.76 yr)  
   first obs. used      1998-09-13  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:10  

Additional Information
 Jupiter MOID = 2.21558 au 
 T_jup = 3.495 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.276156813349819E-15 -5.651523054630934E-15 -7.93883366383972E-14 -1.782040422207551E-15 3.165852553468836E-14 -5.988769815486502E-16
q -5.651523054630934E-15 1.410246820345278E-14 2.635968076637065E-13 9.040558245942447E-15 -7.387618820725486E-14 1.532629635252305E-15
tp -7.93883366383972E-14 2.635968076637065E-13 4.156483183856842E-9 5.848511288541478E-12 1.145930223390496E-9 4.385109309808301E-13
node -1.782040422207551E-15 9.040558245942447E-15 5.848511288541478E-12 1.744514559448418E-7 -1.744369596987545E-7 -2.550134610445142E-10
peri 3.165852553468836E-14 -7.387618820725486E-14 1.145930223390496E-9 -1.744369596987545E-7 1.747561744196191E-7 2.55105009822132E-10
i -5.988769815486502E-16 1.532629635252305E-15 4.385109309808301E-13 -2.550134610445142E-10 2.55105009822132E-10 2.371362845443981E-11

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 16.5   n/a MPO468826  

85676 (1998 RT2)          Discovered 1998-Sep-13 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 RT2 = 2000 AB235 = 2010 VF220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-24 01:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin