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4979 Otawara (1949 PQ)
Classification: Main-belt Asteroid          SPK-ID: 2004979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 117 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442707916150429 2.488e-08  
a 2.167989694355726 5.244e-09 au
q 1.85521210493777 5.4213e-08 au
i .9102039024145825 7.2837e-07 deg
node 69.77149320052472 9.0224e-05 deg
peri 206.783389835836 8.8748e-05 deg
M 164.8548590307513 5.9088e-06 deg
tp 2458666.571013945027
(2019-Jul-02.07101395)
1.8762e-05 TDB
period 1165.961598644389
3.19
4.2304e-06
1.158e-08
d
yr
n .3087580246369656 1.1203e-09 deg/d
Q 2.480767283773682 6.0006e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2365  
   data-arc span      26140 days (71.57 yr)  
   first obs. used      1949-08-02  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49346  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:00:48  

Additional Information
 Earth MOID = .836998 au 
 Jupiter MOID = 2.62012 au 
 T_jup = 3.677 
[ 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 14.33   n/a E2021B10  
diameter diameter 3.204 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.707 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Doressoundiram, A.; Weissman, P.R.; Fulchignoni, M.; Barucci, M.A.; et al. (1999) Astron. Astrophys. 352, 697-702.]
[Le Bras, A.; Dotto, E.; Fulchignoni, M.; Doressoundiram, A.; et al. (2001) Astron. Astrophys. 379, 660-663.]
[Fauvaud, S.; Fauvaud, M.; Paschke, A. (2003) Minor Planet Bull. 30, 73.]
[Fornasier, S.; Barucci, M.A.; Binzel, R.P.; Birlan, M.; et al. (2003) Astron. Astrophys. 398, 327-333.]
[Galad, A. (2009) Minor Planet Bull. 36, 183-186.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.244   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4979 Otawara (1949 PQ)          Discovered 1949-Aug-02 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 PQ = 1977 DW10 = 1978 SW4 = 1978 TY5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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