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 ]  
18549 (1997 AD13)
Classification: Main-belt Asteroid          SPK-ID: 2018549
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2472296818825699 3.5533e-08  
a 2.596001429579777 1.23e-08 au
q 1.954192821978072 9.3488e-08 au
i 12.16849546206023 3.4622e-06 deg
node 93.36937132384486 2.1091e-05 deg
peri 126.0734672840583 2.2708e-05 deg
M 239.0833640070662 1.1589e-05 deg
tp 2459909.644139454659
(2022-Nov-26.14413945)
5.139e-05 TDB
period 1527.762401647303
4.18
1.0858e-05
2.973e-08
d
yr
n .2356387351932679 1.6746e-09 deg/d
Q 3.237810037181482 1.534e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2061  
   data-arc span      24095 days (65.97 yr)  
   first obs. used      1955-02-24  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:01:12  

Additional Information
 Earth MOID = .972518 au 
 Jupiter MOID = 1.8413 au 
 T_jup = 3.342 
[ 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 13.44   n/a MPCxxxxx  
diameter diameter 5.125 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.190   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

18549 (1997 AD13)          Discovered 1997-Jan-11 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AD13 = 1977 QL5 = 1991 VU6 
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-03 15:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin