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26315 (1998 UF4)
Classification: Main-belt Asteroid          SPK-ID: 2026315
[ 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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446414265557469 3.3778e-08  
a 2.320878796874069 7.7001e-09 au
q 1.753095697143811 7.7179e-08 au
i 11.20331053066455 3.6673e-06 deg
node 104.9858510184377 2.2573e-05 deg
peri 222.7769224049262 2.4344e-05 deg
M 154.5136586099251 9.4236e-06 deg
tp 2458646.204320528041
(2019-Jun-11.70432053)		 3.311e-05 TDB
period 1291.448577459853
3.54		 6.427e-06
1.76e-08		 d
yr
n .2787567436158264 1.3873e-09 deg/d
Q 2.888661896604327 9.5838e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      9190 days (25.16 yr)  
   first obs. used      1996-01-12  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:15:28  

Additional Information
 Earth MOID = .756231 au 
 Jupiter MOID = 2.47911 au 
 T_jup = 3.512 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457497.5 (2016-Apr-19.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2453747462956724 3.378e-08  
q 1.750856782320693 7.7221e-08 au
tp 2457355.656326714359
(2015-Nov-29.15632671)		 3.2249e-05 TDB
node 105.0268984841479 2.259e-05 deg
peri 222.8216325629779 2.4352e-05 deg
i 11.20091807580602 3.6663e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      9190 days (25.16 yr)  
   first obs. used      1996-01-12  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:15:28  

Additional Information
 Jupiter MOID = 2.47911 au 
 T_jup = 3.512 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.141118788992546E-15 -2.601627712595511E-15 3.288983759996841E-13 -7.87184780403744E-15 7.544603875598705E-14 -4.354005635174499E-15
q -2.601627712595511E-15 5.963079288614663E-15 -7.609787262291033E-13 1.873885354555733E-14 -1.753806347919935E-13 1.013213786452595E-14
tp 3.288983759996841E-13 -7.609787262291033E-13 1.039996859098661E-9 -4.811693811649917E-12 3.112466698339489E-10 -7.120332964213505E-12
node -7.87184780403744E-15 1.873885354555733E-14 -4.811693811649917E-12 5.103260874808525E-10 -5.018138683575838E-10 -9.347100452119991E-12
peri 7.544603875598705E-14 -1.753806347919935E-13 3.112466698339489E-10 -5.018138683575838E-10 5.930053634177967E-10 7.143459457246475E-12
i -4.354005635174499E-15 1.013213786452595E-14 -7.120332964213505E-12 -9.347100452119991E-12 7.143459457246475E-12 1.344196685426943E-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 14.83   n/a E2021B10  
diameter diameter 5.118 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26315 (1998 UF4)          Discovered 1998-Oct-21 by Korlevic, K. at Visnjan
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 UF4 = 2000 EO167 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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