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 ]  
79471 (1998 AH4)
Classification: Main-belt Asteroid          SPK-ID: 2079471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06531113734167862 4.1772e-08  
a 2.988778046692246 1.9978e-08 au
q 2.793577553200935 1.2468e-07 au
i 8.884133235962587 4.5802e-06 deg
node 300.1841039785016 3.0093e-05 deg
peri 87.62990717131983 4.6044e-05 deg
M 197.3512556941177 3.5037e-05 deg
tp 2459853.182083478500
(2022-Sep-30.68208348)
0.00018556 TDB
period 1887.291238320113
5.17
1.8923e-05
5.181e-08
d
yr
n .1907495741465094 1.9125e-09 deg/d
Q 3.183978540183557 2.1283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      8181 days (22.40 yr)  
   first obs. used      1997-11-30  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54264  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:40:41  

Additional Information
 Earth MOID = 1.81594 au 
 Jupiter MOID = 2.14894 au 
 T_jup = 3.235 
[ 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 14.4   n/a MPO337854  
diameter diameter 4.370 km 0.462 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79471 (1998 AH4)          Discovered 1998-Jan-02 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 AH4 = 2001 QD259 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-03 14:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin