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 ]  
120701 (1997 HR16)
Classification: Main-belt Asteroid          SPK-ID: 2120701
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03065906537965284 5.0473e-08  
a 2.908896564714178 2.0282e-08 au
q 2.819712514753959 1.4502e-07 au
i 2.557831876026106 4.5278e-06 deg
node 42.66525138484808 0.00010182 deg
peri 332.7081131945598 0.00012567 deg
M 153.9258751749843 7.3775e-05 deg
tp 2458621.681510418952
(2019-May-18.18151042)
0.00037146 TDB
period 1812.136237212112
4.96
1.8952e-05
5.189e-08
d
yr
n .1986605601761176 2.0777e-09 deg/d
Q 2.998080614674398 2.0903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1996-02-16  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:04:01  

Additional Information
 Earth MOID = 1.81937 au 
 Jupiter MOID = 2.13286 au 
 T_jup = 3.282 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.22   n/a MPCxxxxx  

120701 (1997 HR16)          Discovered 1997-Apr-30 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1997 HR16 = 2004 VF55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 00:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin