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4439 Muroto (1984 VA)
Classification: Main-belt Asteroid          SPK-ID: 2004439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2672900709038449 3.1327e-08  
a 3.090344379899512 1.5366e-08 au
q 2.264326011478873 9.7918e-08 au
i 2.292215697906885 4.0193e-06 deg
node 51.89232991605585 0.00010098 deg
peri 17.73744064384967 0.00010133 deg
M 279.9151140569103 1.0127e-05 deg
tp 2459837.924877981568
(2022-Sep-15.42487798)
5.8222e-05 TDB
period 1984.306454357593
5.43
1.48e-05
4.052e-08
d
yr
n .1814235896927261 1.3531e-09 deg/d
Q 3.916362748320152 1.9473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1696  
   data-arc span      24595 days (67.34 yr)  
   first obs. used      1954-04-08  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48389  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:31:14  

Additional Information
 Earth MOID = 1.27856 au 
 Jupiter MOID = 1.40816 au 
 T_jup = 3.168 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456772.5 (2014-Apr-25.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2758818856410442 3.104e-08  
q 2.225017055655199 9.6919e-08 au
tp 2455893.151677595890
(2011-Nov-27.65167760)
4.1499e-05 TDB
node 52.27871771887173 9.9938e-05 deg
peri 17.39444157710657 0.00010025 deg
i 2.30943437893671 4.0496e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1696  
   data-arc span      24595 days (67.34 yr)  
   first obs. used      1954-04-08  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48389  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:31:14  

Additional Information
 Jupiter MOID = 1.40816 au 
 T_jup = 3.168 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.634635102352802E-16 -2.991572019480428E-15 -2.799418566401608E-13 -1.251065124394297E-15 -7.309128022441191E-14 -6.099789793630562E-17
q -2.991572019480428E-15 9.393293588192734E-15 9.665080293543264E-13 4.620221904183012E-15 2.534116034809416E-13 1.815671926335715E-16
tp -2.799418566401608E-13 9.665080293543264E-13 1.722164374495915E-9 1.655876792853532E-12 3.493652892295426E-10 -1.405154505193092E-13
node -1.251065124394297E-15 4.620221904183012E-15 1.655876792853532E-12 9.987510727212706E-9 -9.978762696717213E-9 -1.011995560206108E-10
peri -7.309128022441191E-14 2.534116034809416E-13 3.493652892295426E-10 -9.978762696717213E-9 1.005051880166121E-8 1.010918502717609E-10
i -6.099789793630562E-17 1.815671926335715E-16 -1.405154505193092E-13 -1.011995560206108E-10 1.010918502717609E-10 1.639961075539277E-11

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 13.31   n/a MPO636131  
diameter diameter 12.184 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.31429 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4439 Muroto (1984 VA)          Discovered 1984-Nov-02 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1984 VA = 1975 EN1 = 1980 BH3 = 2019 GN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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