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 ]  
108261 (2001 HX51)
Classification: Main-belt Asteroid          SPK-ID: 2108261
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09090480486078116 4.5025e-08  
a 3.104900197051639 3.3137e-08 au
q 2.822649850526459 1.4606e-07 au
i 21.06110591867216 5.3477e-06 deg
node 208.886087696519 1.4681e-05 deg
peri 254.3583028930539 3.5328e-05 deg
M 282.3020464709703 3.4559e-05 deg
tp 2459431.797532614918
(2021-Aug-05.29753261)
0.00019502 TDB
period 1998.342358957487
5.47
3.1991e-05
8.759e-08
d
yr
n .1801493114462168 2.8839e-09 deg/d
Q 3.38715054357682 3.6149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      7661 days (20.97 yr)  
   first obs. used      1998-11-10  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55065  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:43:44  

Additional Information
 Earth MOID = 1.91637 au 
 Jupiter MOID = 1.93144 au 
 T_jup = 3.112 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457585.5 (2016-Jul-16.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08707382152277307 4.4884e-08  
q 2.836772454604159 1.4488e-07 au
tp 2457430.472979488841
(2016-Feb-11.97297949)
0.00019125 TDB
node 208.939129274259 1.4672e-05 deg
peri 254.2416361080182 3.6742e-05 deg
i 21.05727963156222 5.3515e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      7661 days (20.97 yr)  
   first obs. used      1998-11-10  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55065  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:43:44  

Additional Information
 Jupiter MOID = 1.93144 au 
 T_jup = 3.112 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.014533072192189E-15 -6.360352884632159E-15 6.584005320128626E-13 5.506834336876095E-15 1.001246325033359E-13 -2.560145483255677E-16
q -6.360352884632159E-15 2.098883332333105E-14 -2.113878645355932E-13 -1.97211471057214E-14 1.765729807896068E-14 5.435734576577456E-15
tp 6.584005320128626E-13 -2.113878645355932E-13 3.657667480987896E-8 -3.197125922105492E-11 6.482006411246903E-9 2.686896025085502E-11
node 5.506834336876095E-15 -1.97211471057214E-14 -3.197125922105492E-11 2.152533095604862E-10 -2.062889936629946E-10 -1.152451161725964E-11
peri 1.001246325033359E-13 1.765729807896068E-14 6.482006411246903E-9 -2.062889936629946E-10 1.349946791006636E-9 1.54171121065607E-11
i -2.560145483255677E-16 5.435734576577456E-15 2.686896025085502E-11 -1.152451161725964E-11 1.54171121065607E-11 2.86389332364301E-11

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 14.6   n/a MPO453540  
diameter diameter 7.910 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108261 (2001 HX51)          Discovered 2001-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 HX51 = 1998 VP19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-03 17:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin