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9178 Momoyo (1991 DU)
Classification: Main-belt Asteroid          SPK-ID: 2009178
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08126534497591568 4.0232e-08  
a 2.878874218911859 1.4116e-08 au
q 2.644921512369717 1.145e-07 au
i 2.261186819441105 4.5413e-06 deg
node 31.33787855193544 9.9923e-05 deg
peri 17.38171087827894 0.00010436 deg
M 94.60892024982034 2.8704e-05 deg
tp 2458531.619633473763
(2019-Feb-17.11963347)
0.00014238 TDB
period 1784.154512108659
4.88
1.3122e-05
3.593e-08
d
yr
n .2017762461472705 1.484e-09 deg/d
Q 3.112826925454002 1.5263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1768  
   data-arc span      11050 days (30.25 yr)  
   first obs. used      1989-11-04  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:13:26  

Additional Information
 Earth MOID = 1.65496 au 
 Jupiter MOID = 2.18536 au 
 T_jup = 3.289 
[ 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 13.8   n/a MPO384838  
diameter diameter 5.633 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.202   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9178 Momoyo           Discovered 1991 Feb. 23 by S. Inoda and T. Urata at Karasuyama.
Momoyo Urata is the wife of the second discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15

Alternate Designations
 1991 DU = 1994 WH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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