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27791 Masaru (1993 DD1)
Classification: Main-belt Asteroid          SPK-ID: 2027791
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05626020630560687 3.5582e-08  
a 2.187864054615858 7.0063e-09 au
q 2.064774371534548 7.7102e-08 au
i 4.738129796553977 5.4948e-06 deg
node 18.02620881162855 4.1426e-05 deg
peri 131.445925052423 6.7144e-05 deg
M 169.3062985917105 5.1719e-05 deg
tp 2458444.596330289596
(2018-Nov-22.09633029)
0.00016976 TDB
period 1182.031163402587
3.24
5.6779e-06
1.555e-08
d
yr
n .3045604981883103 1.463e-09 deg/d
Q 2.310953737697167 7.4005e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2087  
   data-arc span      10098 days (27.65 yr)  
   first obs. used      1991-09-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46669  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:28:59  

Additional Information
 Earth MOID = 1.07813 au 
 Jupiter MOID = 2.66758 au 
 T_jup = 3.669 
[ 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 14.0   n/a MPO319428  
diameter diameter 3.073 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.565   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27791 Masaru           Discovered 1993 Feb. 24 by Y. Kushida and O. Muramatsu at the Yatsugatake South Base Observatory.
Masaru Kubota (b. 1959) is a broadcaster at a television station and a certified weather forecaster. He makes an effort to popularize science and astronomy through his weather reports.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1993 DD1 = 1991 SH5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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