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
JPL Small-Body Database Browser
Search: [ help ]  
730 Athanasia (A912 GG)
Classification: Main-belt Asteroid          SPK-ID: 2000730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778041375211677 3.0768e-08  
a 2.243962921512258 6.4915e-09 au
q 1.844977029623292 6.9887e-08 au
i 4.234750849888208 3.1701e-06 deg
node 95.07344403310465 4.8916e-05 deg
peri 123.5976527804053 5.0016e-05 deg
M 52.39330108362891 1.1517e-05 deg
tp 2458821.812075983440
3.9035e-05 TDB
period 1227.783921140667
n .2932112025587886 1.2723e-09 deg/d
Q 2.642948813401225 7.6457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2325  
   data-arc span      39514 days (108.18 yr)  
   first obs. used      1912-04-11  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:19:38  

Additional Information
 Earth MOID = .841149 au 
 Jupiter MOID = 2.33366 au 
 T_jup = 3.608 
[ 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 13.7   n/a MPO473771  
diameter diameter 4.497 km 0.734 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.7348 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2013) Minor Planet Bull. 40, 194-195.]
[Pilcher, F. (2016) Minor Planet Bull. 43, 222-224.]
geometric albedo albedo 0.289   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

730 Athanasia (A912 GG)          Discovered 1912-Apr-10 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-May-13 10:32 < 00:01 Vesta 0.0421282010542693 0.0421275064823632 0.0421288956337323 2.31522457264862 2.31522335273616 2417343.938963000 0.622059318619339 326.03780232263 34.1029574130781 -89.2466118105588 182505.42906805 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 15:19:49 2020-Jun-23 15:20

Alternate Designations
 A912 GG = 2016 FP6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Aug-12 10:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin