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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2690143170534374 3.3247e-08  
a 3.088101128427006 1.4863e-08 au
q 2.257357712371266 1.0345e-07 au
i 2.294694690125219 4.2612e-06 deg
node 52.07688728340852 0.0001012 deg
peri 17.67028644914749 0.00010154 deg
M 244.3885122165297 9.8927e-06 deg
tp 2459837.052440140866
(2022-Sep-14.55244014)
5.7905e-05 TDB
period 1982.146262834236
5.43
1.431e-05
3.918e-08
d
yr
n .1816213095623137 1.3112e-09 deg/d
Q 3.918844544482747 1.8861e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      24213 days (66.29 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48755  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:37:16  

Additional Information
 Earth MOID = 1.27131 au 
 Jupiter MOID = 1.40448 au 
 T_jup = 3.168 
[ 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 13.29   n/a E2021B10  
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

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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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