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 ]  
81915 Hartwick (2000 NS11)
Classification: Outer Main-belt Asteroid          SPK-ID: 2081915
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03894776187682749 5.1944e-08  
a 3.216889210537865 2.6003e-08 au
q 3.091598575581701 1.7038e-07 au
i 9.658188944720106 4.7303e-06 deg
node 230.5345230384956 3.1763e-05 deg
peri 294.5910607812355 6.2752e-05 deg
M 353.3114531959922 5.3377e-05 deg
tp 2459239.654515349049
(2021-Jan-25.15451535)
0.00031249 TDB
period 2107.427209332131
5.77
2.5552e-05
6.996e-08
d
yr
n .1708244054199567 2.0712e-09 deg/d
Q 3.342179845494029 2.7016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      8393 days (22.98 yr)  
   first obs. used      1998-03-31  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53169  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:39:31  

Additional Information
 Earth MOID = 2.11071 au 
 Jupiter MOID = 1.69153 au 
 T_jup = 3.167 
[ 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 14.28   n/a MPCxxxxx  
diameter diameter 8.682 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

81915 Hartwick           Discovered 2000 July 15 by D. D. Balam at the Dominion Astrophysical Observatory, Victoria.
F. David A. Hartwick (b. 1941) is a professor of physics and astronomy at the University of Victoria and a leading authority in the field of galaxy formation and evolution. He is legendary for his encyclopedic knowledge of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

[ show close-approach data ]
Alternate Designations
 2000 NS11 = 1998 FQ98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-25 08:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin