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19392 Oyamada (1998 DW31)
Classification: Main-belt Asteroid          SPK-ID: 2019392
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05944109108751542 3.9403e-08  
a 2.291383409390897 7.0341e-09 au
q 2.155181079436872 8.917e-08 au
i 6.639044452334642 3.9709e-06 deg
node 316.6166913510158 2.8247e-05 deg
peri 196.7981218546795 3.8027e-05 deg
M 269.4794773224678 2.6781e-05 deg
tp 2459715.058813778664
(2022-May-15.55881378)
9.4784e-05 TDB
period 1266.907984710342
3.47
5.8337e-06
1.597e-08
d
yr
n .2841563904755941 1.3085e-09 deg/d
Q 2.427585739344923 7.4522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1630  
   data-arc span      10929 days (29.92 yr)  
   first obs. used      1991-02-10  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:10:13  

Additional Information
 Earth MOID = 1.16745 au 
 Jupiter MOID = 2.56647 au 
 T_jup = 3.587 
[ 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 14.91   n/a E2021B10  
diameter diameter 2.288 km 0.364 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.53935 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.535   0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19392 Oyamada           Discovered 1998 Feb. 22 by T. Okuni at Nanyo.
Hiroyuki Oyamada (b. 1970) is an amateur astronomer and a member of the Chokainomori Astronomy Club in Sakata, Yamagata, Japan. He became interested in astronomy around 1979 and has observed Jupiter and solar eclipses since 1994.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111012/MPCPages.arcLast Updated: 2011-10-13

Alternate Designations
 1998 DW31 = 1991 CV3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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