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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03910409694951713 5.2013e-08  
a 3.217260299622251 3.107e-08 au
q 3.09145224095399 1.7211e-07 au
i 9.658262054489633 5.0765e-06 deg
node 230.5441730896182 3.1946e-05 deg
peri 294.6826527018175 6.6612e-05 deg
M 319.0629434184672 5.9345e-05 deg
tp 2459240.185542698569
(2021-Jan-25.68554270)
0.00034842 TDB
period 2107.79187799276
5.77
3.0534e-05
8.36e-08
d
yr
n .1707948511229801 2.4741e-09 deg/d
Q 3.343068358290513 3.2285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      7976 days (21.84 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 19:23:34  

Additional Information
 Earth MOID = 2.11101 au 
 Jupiter MOID = 1.69181 au 
 T_jup = 3.166 
[ 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 14.3   n/a MPO381804  
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 2020-Dec-03 19:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin