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 ]  
983 Gunila (A922 OD)
Classification: Main-belt Asteroid          SPK-ID: 2000983
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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09154161059474722 3.105e-08  
a 3.161284460423028 1.3022e-08 au
q 2.871895389367758 9.927e-08 au
i 14.86431448386145 3.5174e-06 deg
node 250.6830302403196 1.3588e-05 deg
peri 348.4497970803255 2.4623e-05 deg
M 278.7727002981333 2.2263e-05 deg
tp 2459859.726404524664
(2022-Oct-07.22640452)
0.00012808 TDB
period 2053.022890591629
5.62
1.2685e-05
3.473e-08
d
yr
n .1753511866086681 1.0834e-09 deg/d
Q 3.450673531478299 1.4214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3987  
   data-arc span      36127 days (98.91 yr)  
   first obs. used      1922-07-31  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:48:36  

Additional Information
 Earth MOID = 1.86074 au 
 Jupiter MOID = 1.59782 au 
 T_jup = 3.146 
[ 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 9.43   n/a E2021B10 IRAS observations used: 24
diameter diameter 73.87 km 1.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24
rotation period rot_per 8.37 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:
[Hayes-Gehrke, M.N.; Berenhaus, J.; Mascone, A.; Lopez-Lahocki, M.; et al. (2014) Minor Planet Bull. 41, 77.]
geometric albedo albedo 0.0477   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24
B-V BV 0.744   0.062 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.78, mean=8.90, max.=9.03) deg.
U-B UB 0.267   0.072 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.78 deg.
Tholen spectral type spec_T XD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

983 Gunila (A922 OD)          Discovered 1922-Jul-30 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A922 OD = 1934 SE = 1940 TF = 1944 LA = 1949 JB = 1955 HV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-24 08:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin