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 ]  
120720 (1997 SG12)
Classification: Main-belt Asteroid          SPK-ID: 2120720
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07128568608190697 4.8217e-08  
a 2.401136794789745 1.1461e-08 au
q 2.229970110996647 1.164e-07 au
i 3.898397571817069 5.4102e-06 deg
node 338.349903457895 6.1554e-05 deg
peri 146.4370571763478 6.8371e-05 deg
M 347.870737027376 2.9611e-05 deg
tp 2459246.288423655256
(2021-Jan-31.78842366)
0.0001118 TDB
period 1359.013532239883
3.72
9.7304e-06
2.664e-08
d
yr
n .2648980245300864 1.8966e-09 deg/d
Q 2.572303478582843 1.2278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      433  
   data-arc span      9988 days (27.35 yr)  
   first obs. used      1993-09-14  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5225  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:45  

Additional Information
 Earth MOID = 1.2463 au 
 Jupiter MOID = 2.454 au 
 T_jup = 3.519 
[ 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 16.5   n/a MPO449701  

120720 (1997 SG12)          Discovered 1997-Sep-27 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 SG12 = 2004 PA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-07 07:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin