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3145 Walter Adams (1955 RY)
Classification: Main-belt Asteroid          SPK-ID: 2003145
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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 2-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.

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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .235979712603397 6.4013e-08  
a 2.192383089404192 8.5844e-09 AU
q 1.675025158050043 1.4243e-07 AU
i 5.033976174945972 6.6712e-06 deg
node 283.6983486317664 6.2534e-05 deg
peri 41.8317105436944 6.3653e-05 deg
M 108.9114993213201 1.3091e-05 deg
tp 2456641.789302698751
4.2158e-05 JED
period 1185.695283171723
n .303619323707693 1.7832e-09 deg/d
Q 2.709741020758342 1.061e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1084  
   data-arc span      21697 days (59.40 yr)  
   first obs. used      1955-09-14  
   last obs. used      2015-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51199  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:46:25  

Additional Information
 Earth MOID = .667762 AU 
 T_jup = 3.630 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO319123  
rotation period rot_per 2.7113 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Wetterer, C.J.; Burns, M.S.; Murphy, K.L. (1998) Minor Planet Bul. 25, 19-20.]
[Owings, L.E.; Warner, B.D.; Pravec, P.; Kusnirak, P. (2011) Minor Planet Bul. 38, 13-14.]

3145 Walter Adams (1955 RY)          Discovered 1955-Sep-14 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1955 RY = 1955 SY1 = 1955 TD = 1981 RS2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-27 17:19 UT
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