Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
4151 Alanhale (1985 HV1)
Classification: Main-belt Asteroid          SPK-ID: 2004151
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
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.
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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412202769463894 6.0442e-08  
a 3.147278185738543 3.0186e-08 AU
q 2.702818688721216 1.9886e-07 AU
i 1.008324552616453 6.0193e-06 deg
node 67.05418884689338 0.00036565 deg
peri 74.61167688608934 0.00036631 deg
M 64.62028827237823 2.3536e-05 deg
tp 2456034.427154887095
(2012-Apr-16.92715489)		 0.00013445 JED
period 2039.393939023599
5.58		 2.9341e-05
8.033e-08		 d
yr
n .1765230312356215 2.5396e-09 deg/d
Q 3.59173768275587 3.4449e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      1275  
   data-arc span      16441 days (45.01 yr)  
   first obs. used      1968-04-17  
   last obs. used      2013-04-22  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .53371  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:01:47  

Additional Information
 Earth MOID = 1.71561 AU 
 T_jup = 3.193 
[ 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 12.0 mag n/a PDS3 (MPC 28111)  

4151 Alanhale (1985 HV1)          Discovered 1985-Apr-24 by Shoemaker, C. and E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 HV1 = 1968 HD = 1976 SO1 = 1979 FX1 = 1982 SZ4 = 1985 JX 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2013-May-23 15:24 UT
(server date/time)   		NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster:   Alan B. Chamberlin