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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05571858182921394 3.532e-08  
a 2.187567266888062 6.9005e-09 au
q 2.06567912112105 7.6348e-08 au
i 4.739354278732931 5.4969e-06 deg
node 18.08136357957995 4.1407e-05 deg
peri 130.9359870551175 6.775e-05 deg
M 48.00091993349903 5.2479e-05 deg
tp 2458442.924892813016
(2018-Nov-20.42489281)
0.00017224 TDB
period 1181.790654552132
3.24
5.5918e-06
1.531e-08
d
yr
n .3046224799741969 1.4414e-09 deg/d
Q 2.309455412655074 7.2849e-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 = 1.07967 au 
 Jupiter MOID = 2.67087 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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