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1645 Waterfield (1933 OJ)
Classification: Main-belt Asteroid          SPK-ID: 2001645
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1092998118367179 3.6112e-08  
a 3.060209947785585 1.2426e-08 au
q 2.725729576311768 1.1094e-07 au
i 1.026253690456473 3.4287e-06 deg
node 265.4035284449843 0.00022068 deg
peri 106.1387126583201 0.00022127 deg
M 326.3522174808812 1.5597e-05 deg
tp 2458783.259183141431
(2019-Oct-26.75918314)
8.4659e-05 TDB
period 1955.353399396563
5.35
1.191e-05
3.261e-08
d
yr
n .1841099415129248 1.1214e-09 deg/d
Q 3.394690319259402 1.3784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2970  
   data-arc span      31537 days (86.34 yr)  
   first obs. used      1933-07-24  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:24:52  

Additional Information
 Earth MOID = 1.72505 au 
 Jupiter MOID = 2.07197 au 
 T_jup = 3.225 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.0   n/a MPO416723  
diameter diameter 28.146 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.861 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.]
[Monson, A.; Kipp, S. (2004) Minor Planet Bull. 31, 71-73; Corrigendum: (2004) Minor Planet Bul. 31, 97.]
geometric albedo albedo 0.067   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
Tholen spectral type spec_T XDC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)

1645 Waterfield (1933 OJ)          Discovered 1933-Jul-24 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1933 OJ = 1936 FY = 1939 UH = 1944 RF = 1958 GL = A917 QC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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