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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 ]

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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 
[ 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 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2048-May-31 08:48 < 00:01 Amphi 0.0316600704680019 0.0316576329051154 0.0316625081239191 9.89790788461042 9.89790786626542 2469227.866603311 0.238883206680148 150.095927462413 28.7283573956442 36.7123369301601 101738.036420783 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:02:05 2020-Dec-18 02:02

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 ]
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