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 ]  
20183 (1997 AD1)
Classification: Main-belt Asteroid          SPK-ID: 2020183
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680296115300466 5.053e-08  
a 2.476176033913405 7.9702e-09 au
q 2.060105136854924 1.2329e-07 au
i 3.981379050026053 2.5231e-06 deg
node 118.6560858328486 7.1609e-05 deg
peri 295.4331375805728 7.2473e-05 deg
M 148.5853695989563 1.0715e-05 deg
tp 2458809.086059706254
(2019-Nov-21.58605971)
4.2777e-05 TDB
period 1423.215617234189
3.90
6.8715e-06
1.881e-08
d
yr
n .2529483204376349 1.2213e-09 deg/d
Q 2.892246930971885 9.3095e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1810  
   data-arc span      8929 days (24.45 yr)  
   first obs. used      1997-01-02  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5038  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:57:07  

Additional Information
 Earth MOID = 1.07489 au 
 Jupiter MOID = 2.46213 au 
 T_jup = 3.458 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.78   n/a MPCxxxxx  

20183 (1997 AD1)          Discovered 1997-Jan-02 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 AD1 = 1998 HJ26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-30 23:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin