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 ]  
172034 (2001 WR1)
Classification: Amor [NEO]          SPK-ID: 2172034
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 173 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2025288856551599 6.7086e-08  
a 1.277196720392859 1.8851e-09 au
q 1.018527491849269 8.5775e-08 au
i 25.02986069830902 1.0876e-05 deg
node 6.514125568740085 8.5658e-06 deg
peri 48.55136690250107 2.1808e-05 deg
M 200.6808225335064 1.9937e-05 deg
tp 2459629.819304776611
(2022-Feb-19.31930478)
2.942e-05 TDB
period 527.2117961897263
1.44
1.1672e-06
3.196e-09
d
yr
n .6828375286778442 1.5118e-09 deg/d
Q 1.53586594893645 2.2669e-09 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      24933 days (68.26 yr)  
   first obs. used      1953-02-14  
   last obs. used      2021-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47836  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-22 05:51:10  

Additional Information
 Earth MOID = .0752383 au 
 Jupiter MOID = 3.8388 au 
 T_jup = 4.953 
[ 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 17.76   n/a MPCxxxxx  
diameter diameter 0.631 km 0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 8.0475 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2018) Minor Planet Bull. 45, 248-256.]
geometric albedo albedo 0.336   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

172034 (2001 WR1)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-05 04:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin