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 ]  
266444 (2007 HP81)
Classification: Main-belt Asteroid          SPK-ID: 2266444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07671684179670051 6.7065e-08  
a 3.019657260858786 4.0014e-08 au
q 2.787998692497224 1.9991e-07 au
i 1.754388751930318 1.2131e-05 deg
node 34.57405376959421 0.00025456 deg
peri 265.1381379827397 0.0002791 deg
M 100.901609651192 0.00012209 deg
tp 2458463.306809581448
(2018-Dec-10.80680958)
0.00064668 TDB
period 1916.615098799806
5.25
3.8097e-05
1.043e-07
d
yr
n .1878311405484773 3.7335e-09 deg/d
Q 3.251315829220347 4.3084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1993-09-19  
   last obs. used      2017-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62135  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 17:16:35  

Additional Information
 Earth MOID = 1.77306 au 
 Jupiter MOID = 1.90527 au 
 T_jup = 3.242 
[ 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 16.2   n/a MPO494439  

266444 (2007 HP81)          Discovered 2007-Apr-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2007 HP81 = 1996 EB4 = 2006 BX134 
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-05 20:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin