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 ]  
1337 Gerarda (1934 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2001337
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09782409980419096 4.0227e-08  
a 2.913544866609401 1.481e-08 au
q 2.628529962794214 1.1473e-07 au
i 17.997636879433 4.8175e-06 deg
node 160.3372366752377 1.4444e-05 deg
peri 200.4906938084948 2.7516e-05 deg
M 140.3759693180086 2.3607e-05 deg
tp 2456692.193447041000
(2014-Feb-03.69344704)
0.00011921 JED
period 1816.481555241006
4.97
1.385e-05
3.792e-08
d
yr
n .1981853319464266 1.5111e-09 deg/d
Q 3.198559770424587 1.6259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1676  
   data-arc span      29685 days (81.27 yr)  
   first obs. used      1934-09-09  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47075  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:38:21  

Additional Information
 Earth MOID = 1.62708 au 
 Jupiter MOID = 2.23216 au 
 T_jup = 3.202 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2 mag n/a MPO267712  
diameter diameter 38.86 km 3.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 30
rotation period rot_per 12.52 h n/a LCDB (Rev. 2015-December); 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:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.0441   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 30

1337 Gerarda (1934 RA1)          Discovered 1934-Sep-09 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1934 RA1 = 1942 EE1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-09 13:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin