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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
85855 (1999 AN15)
Classification: Main-belt Asteroid          SPK-ID: 2085855
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08720906466468874 4.0053e-08  
a 2.34756053600238 9.6631e-09 au
q 2.142831977413877 9.4594e-08 au
i 1.781110991198412 3.8463e-06 deg
node 315.0291278424564 0.00015268 deg
peri 218.1504558666035 0.00015461 deg
M 181.9314663729922 2.5663e-05 deg
tp 2459250.342795759585
(2021-Feb-04.84279576)
9.5084e-05 TDB
period 1313.782967200041
3.60
8.1118e-06
2.221e-08
d
yr
n .2740178621490571 1.6919e-09 deg/d
Q 2.552289094590883 1.0506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      7651 days (20.95 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55416  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:19:38  

Additional Information
 Earth MOID = 1.14859 au 
 Jupiter MOID = 2.41599 au 
 T_jup = 3.554 
[ 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 15.3   n/a MPO453289  
diameter diameter 2.047 km 0.580 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.384   0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85855 (1999 AN15)          Discovered 1999-Jan-09 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 AN15 = 2001 TO100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-10 05:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin