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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201244123389814 1.3692e-08  
a 3.932033918480725 2.6902e-08 au
q 3.459700654726286 4.6702e-08 au
i 8.210992416392351 2.665e-07 deg
node 217.2147596792663 7.873e-06 deg
peri 278.7176592574945 1.271e-05 deg
M 253.2626385825032 8.441e-06 deg
tp 2460240.880649336646
(2023-Oct-23.38064934)
7.1628e-05 TDB
period 2847.897209789593
7.80
2.9227e-05
8.002e-08
d
yr
n .1264090567463273 1.2973e-09 deg/d
Q 4.404367182235164 3.0134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2651  
   data-arc span      17025 days (46.61 yr)  
   first obs. used      1974-11-15  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:51:42  

Additional Information
 Earth MOID = 2.48782 au 
 Jupiter MOID = .873071 au 
 T_jup = 3.032 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457296.5 (2015-Oct-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117056365997522 1.5228e-08  
q 3.509881180230677 5.4875e-08 au
tp 2457409.514098266821
(2016-Jan-22.01409827)
6.2776e-05 TDB
node 217.5425086876847 7.919e-06 deg
peri 282.0690994254043 1.2903e-05 deg
i 8.162469999615837 2.6219e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2651  
   data-arc span      17025 days (46.61 yr)  
   first obs. used      1974-11-15  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:51:42  

Additional Information
 Jupiter MOID = .873071 au 
 T_jup = 3.032 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.318865743430926E-16 -7.607174913173421E-16 4.40330853424842E-13 3.332858608705546E-15 7.116960091800901E-14 3.570604253781546E-16
q -7.607174913173421E-16 3.011259909237158E-15 -1.594618658147646E-12 -1.255962957184341E-14 -2.594027161208151E-13 -1.208397084559884E-15
tp 4.40330853424842E-13 -1.594618658147646E-12 3.940776886784156E-9 -2.906116495388716E-11 6.397601563133512E-10 2.172394533460956E-12
node 3.332858608705546E-15 -1.255962957184341E-14 -2.906116495388716E-11 6.271090855273274E-11 -6.695455116353E-11 1.288766803586863E-12
peri 7.116960091800901E-14 -2.594027161208151E-13 6.397601563133512E-10 -6.695455116353E-11 1.664809713381563E-10 -9.991716676406254E-13
i 3.570604253781546E-16 -1.208397084559884E-15 2.172394533460956E-12 1.288766803586863E-12 -9.991716676406254E-13 6.874548523339987E-14

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

[ show close-approach data ]
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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