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 ]  
1660 Wood (1953 GA)
Classification: Main-belt Asteroid          SPK-ID: 2001660
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3008229526440337 2.4708e-08  
a 2.396630535871364 6.0049e-09 au
q 1.675669061673688 5.9112e-08 au
i 20.56233888681985 4.342e-06 deg
node 212.8903319270677 8.4897e-06 deg
peri 276.7747591691087 1.1378e-05 deg
M 141.6189906998777 8.9373e-06 deg
tp 2458667.387269199571
(2019-Jul-02.88726920)		 3.2384e-05 TDB
period 1355.18959808771
3.71		 5.0932e-06
1.394e-08		 d
yr
n .2656454864382011 9.9838e-10 deg/d
Q 3.11759201006904 7.8113e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2851  
   data-arc span      32679 days (89.47 yr)  
   first obs. used      1931-05-20  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:57  

Additional Information
 Earth MOID = .82083 au 
 Jupiter MOID = 2.34758 au 
 T_jup = 3.383 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .301624724936185 2.4732e-08  
q 1.672707351702979 5.9212e-08 au
tp 2457313.813842631339
(2015-Oct-18.31384263)		 2.9455e-05 TDB
node 212.9509050565819 8.4893e-06 deg
peri 276.6949607453571 1.1358e-05 deg
i 20.57026493496116 4.3428e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2851  
   data-arc span      32679 days (89.47 yr)  
   first obs. used      1931-05-20  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:57  

Additional Information
 Jupiter MOID = 2.34758 au 
 T_jup = 3.383 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.116604237631074E-16 -1.46074472639946E-15 5.005849958512281E-14 -3.930458200935019E-15 7.323662583047746E-15 -1.816489444538084E-15
q -1.46074472639946E-15 3.506019765394824E-15 -6.09385041300082E-14 8.915685040243962E-15 -4.014734780166672E-15 3.947642063473971E-15
tp 5.005849958512281E-14 -6.09385041300082E-14 8.67597096951648E-10 -1.146565564531576E-12 2.279052089887399E-10 -4.74410475750567E-12
node -3.930458200935019E-15 8.915685040243962E-15 -1.146565564531576E-12 7.206863736684978E-11 -6.736998172722662E-11 4.856026103128907E-12
peri 7.323662583047746E-15 -4.014734780166672E-15 2.279052089887399E-10 -6.736998172722662E-11 1.28999738103113E-10 -5.877737076807412E-12
i -1.816489444538084E-15 3.947642063473971E-15 -4.74410475750567E-12 4.856026103128907E-12 -5.877737076807412E-12 1.886013857369589E-11

[ 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 11.71   n/a E2021B10  
diameter diameter 11.342 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.8090 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hills, K. (2012) Minor Planet Bull. 39, 239-240.]
[Oey, J.; Alvarez, E.M. (2012) Minor Planet Bull. 39, 147-148.]
[Han, X.L.; Li, B.; Zhao, H. (2013) Minor Planet Bull. 40, 14-15.]
geometric albedo albedo 0.239   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1660 Wood (1953 GA)          Discovered 1953-Apr-07 by Bruwer, J. A. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1953 GA = 1931 KL = 1933 YC = 1951 RD1 = 1955 VQ 
[ 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-03 18:33 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin