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 ]  
13960 (1991 GF8)
Classification: Main-belt Asteroid          SPK-ID: 2013960
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1185326361164933 3.9567e-08  
a 2.773799106830542 1.3646e-08 au
q 2.445013386640343 1.0944e-07 au
i 9.086044511925508 4.3158e-06 deg
node 7.552398239597777 2.6709e-05 deg
peri 107.3237932905952 3.1861e-05 deg
M 231.0723266962292 1.7396e-05 deg
tp 2459804.802759326142
(2022-Aug-13.30275933)
8.2421e-05 TDB
period 1687.372367643963
4.62
1.2451e-05
3.409e-08
d
yr
n .2133494698047351 1.5743e-09 deg/d
Q 3.102584827020741 1.5263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      10777 days (29.51 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41882  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:13:59  

Additional Information
 Earth MOID = 1.47948 au 
 Jupiter MOID = 2.00854 au 
 T_jup = 3.308 
[ 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 13.84   n/a E2021B10  
rotation period rot_per 17.212 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

13960 (1991 GF8)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 GF8 = 1999 AF23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 09:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin