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 ]  
187925 (2001 AN51)
Classification: Main-belt Asteroid          SPK-ID: 2187925
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884583075710307 4.4651e-08  
a 3.080510408401427 3.3696e-08 au
q 2.499962630379149 1.4937e-07 au
i 7.605988864830961 5.1735e-06 deg
node 116.4312568633954 3.7793e-05 deg
peri 297.5523636416872 4.3108e-05 deg
M 295.8007212973305 2.6109e-05 deg
tp 2459552.676274988528
(2021-Dec-04.17627499)
0.00014784 TDB
period 1974.842421252909
5.41
3.2402e-05
8.871e-08
d
yr
n .1822930255729485 2.991e-09 deg/d
Q 3.661058186423704 4.0046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      9008 days (24.66 yr)  
   first obs. used      1996-02-18  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58463  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:23  

Additional Information
 Earth MOID = 1.5221 au 
 Jupiter MOID = 1.74325 au 
 T_jup = 3.187 
[ 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 15.63   n/a E2021B55  
diameter diameter 3.004 km 0.661 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.113   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187925 (2001 AN51)          Discovered 2001-Jan-15 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 2001 AN51 = 2005 WA116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 06:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin