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 ]  
3731 Hancock (1984 DH1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003731
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1153433061831014 4.3491e-08  
a 3.228913161813866 2.1792e-08 au
q 2.856479642352123 1.3778e-07 au
i 21.56586996423888 4.7904e-06 deg
node 264.2624658445249 1.2962e-05 deg
peri 254.3116991563117 2.5511e-05 deg
M 93.19159655476929 2.1051e-05 deg
tp 2458651.898202622379
(2019-Jun-17.39820262)
0.00012492 TDB
period 2119.253820701244
5.80
2.1454e-05
5.874e-08
d
yr
n .1698711105217585 1.7197e-09 deg/d
Q 3.601346681275609 2.4305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2351  
   data-arc span      18874 days (51.67 yr)  
   first obs. used      1969-07-16  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:10:20  

Additional Information
 Earth MOID = 1.9551 au 
 Jupiter MOID = 1.85271 au 
 T_jup = 3.067 
[ 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 10.87   n/a E2021B10  
diameter diameter 53.112 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.712 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Clark, M. (2011) Minor Planet Bull. 38, 187-189.]
geometric albedo albedo 0.019   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3731 Hancock (1984 DH1)          Discovered 1984-Feb-20 by at Perth
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1984 DH1 = 1969 OA = 1969 PR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-08 23:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin