Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
9977 (1994 AH)
Classification: Main-belt Asteroid          SPK-ID: 2009977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06946507117002468 8.126e-08  
a 2.937582085147826 2.7528e-08 AU
q 2.733522736535243 2.4458e-07 AU
i 2.760233754202636 7.9149e-06 deg
node 136.23661200 0.0001623 deg
peri 178.4406730770667 0.00017553 deg
M 202.6779935824321 6.8538e-05 deg
tp 2457804.156421375929
(2017-Feb-19.65642138)
0.00035033 JED
period 1839.007258319755
5.03
2.585e-05
7.077e-08
d
yr
n .1957577918038894 2.7517e-09 deg/d
Q 3.141641433760409 2.9441e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      7755 days (21.23 yr)  
   first obs. used      1994-01-02  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49997  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:36:37  

Additional Information
 Earth MOID = 1.72055 AU 
 T_jup = 3.269 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO250309  

9977 (1994 AH)          Discovered 1994-Jan-02 by Kobayashi, T. at Oizumi
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-May-05 15:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin