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18402 (1992 YU2)
Classification: Main-belt Asteroid          SPK-ID: 2018402
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2620148956432636 2.8755e-08  
a 2.576671594218463 9.674e-09 au
q 1.901545255352351 7.2591e-08 au
i 4.005763898470627 3.2741e-06 deg
node 227.5700371194571 5.7148e-05 deg
peri 201.0111359856505 5.7991e-05 deg
M 295.2457638680586 1.2744e-05 deg
tp 2459472.239464557786
(2021-Sep-14.73946456)
5.4487e-05 TDB
period 1510.730619097649
4.14
8.508e-06
2.329e-08
d
yr
n .2382952959641646 1.342e-09 deg/d
Q 3.251797933084575 1.2209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1321  
   data-arc span      17967 days (49.19 yr)  
   first obs. used      1971-10-12  
   last obs. used      2020-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:28:35  

Additional Information
 Earth MOID = .915707 au 
 Jupiter MOID = 2.06862 au 
 T_jup = 3.374 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457345.5 (2015-Nov-19.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .26512376428656 2.8966e-08  
q 1.891646673834902 7.3521e-08 au
tp 2457958.314667052690
(2017-Jul-23.81466705)
4.8093e-05 TDB
node 227.8089215809705 5.6832e-05 deg
peri 200.2506554378703 5.7652e-05 deg
i 4.018940530254843 3.286e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1321  
   data-arc span      17967 days (49.19 yr)  
   first obs. used      1971-10-12  
   last obs. used      2020-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:28:35  

Additional Information
 Jupiter MOID = 2.06862 au 
 T_jup = 3.374 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.390463927527575E-16 -2.120643802439713E-15 3.671420467519268E-13 -4.561983144946101E-15 7.277126943934114E-14 9.510740904363067E-17
q -2.120643802439713E-15 5.405406540089018E-15 -7.503264600268701E-13 9.63974898650782E-15 -1.514452928943059E-13 -1.996176205092254E-16
tp 3.671420467519268E-13 -7.503264600268701E-13 2.312915842908049E-9 -1.691787644401989E-11 4.864384236252514E-10 -8.681336125462751E-13
node -4.561983144946101E-15 9.63974898650782E-15 -1.691787644401989E-11 3.229919815722226E-9 -3.225279881789119E-9 1.642484305614586E-12
peri 7.277126943934114E-14 -1.514452928943059E-13 4.864384236252514E-10 -3.225279881789119E-9 3.323752333328043E-9 -1.810649635604138E-12
i 9.510740904363067E-17 -1.996176205092254E-16 -8.681336125462751E-13 1.642484305614586E-12 -1.810649635604138E-12 1.079788432799203E-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 14.52   n/a E2021B10  
diameter diameter 3.382 km 0.424 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.268   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18402 (1992 YU2)          Discovered 1992-Dec-26 by Urata, T. at Oohira
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1992 YU2 = 1971 TA2 = 1971 VB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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