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11388 (1998 VU4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011388
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1197342575011671 1.3675e-08  
a 3.933064649278719 2.7121e-08 au
q 3.462142073793244 4.6801e-08 au
i 8.209278678785255 2.6656e-07 deg
node 217.2222799622315 7.8758e-06 deg
peri 278.6631345621805 1.276e-05 deg
M 228.5070706510331 8.3644e-06 deg
tp 2460241.126675232603
(2023-Oct-23.62667523)
7.196e-05 TDB
period 2849.017091173964
7.80
2.9468e-05
8.068e-08
d
yr
n .1263593683292573 1.307e-09 deg/d
Q 4.403987224764195 3.0368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2639  
   data-arc span      16886 days (46.23 yr)  
   first obs. used      1974-11-15  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44627  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:43:32  

Additional Information
 Earth MOID = 2.48955 au 
 Jupiter MOID = .873826 au 
 T_jup = 3.032 
[ 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 11.21   n/a MPCxxxxx  
diameter diameter 24.602 km 0.378 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 28.74 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2016) Minor Planet Bull. 43, 252-255.]
geometric albedo albedo 0.088   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

11388 (1998 VU4)          Discovered 1998-Nov-11 by Sarounova, L. at Ondrejov
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 VU4 = 1974 VA2 = 1982 VS3 = 1982 XG2 = 1982 XM2 = 1985 FL1 = 1990 XR = 1992 BM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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