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192578 (1998 XU61)
Classification: Main-belt Asteroid          SPK-ID: 2192578
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893946282953468 4.335e-08  
a 2.2661985314916 1.1433e-08 au
q 1.836992702976287 9.6976e-08 au
i 5.413856691838876 4.9392e-06 deg
node 80.77098715057789 7.1819e-05 deg
peri 4.208901553301 7.4341e-05 deg
M 208.5432241741362 2.0354e-05 deg
tp 2459920.741701140319
(2022-Dec-07.24170114)
7.2676e-05 TDB
period 1246.078370422347
3.41
9.4297e-06
2.582e-08
d
yr
n .2889063870661532 2.1863e-09 deg/d
Q 2.695404360006912 1.3598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      7850 days (21.49 yr)  
   first obs. used      1998-11-23  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61776  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:43  

Additional Information
 Earth MOID = .853176 au 
 Jupiter MOID = 2.52684 au 
 T_jup = 3.586 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457685.5 (2016-Oct-24.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1890735960319485 4.3233e-08  
q 1.838039888153871 9.6518e-08 au
tp 2457429.789915903916
(2016-Feb-11.28991590)
6.4303e-05 TDB
node 80.79955015348408 7.1847e-05 deg
peri 4.418848987256384 7.4381e-05 deg
i 5.412717830460571 4.9378e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      7850 days (21.49 yr)  
   first obs. used      1998-11-23  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61776  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:43  

Additional Information
 Jupiter MOID = 2.52684 au 
 T_jup = 3.586 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.869068166397357E-15 -4.154306776128137E-15 -3.861711863406402E-13 -2.916525909557348E-14 -1.031660901616376E-13 -3.669726505577501E-16
q -4.154306776128137E-15 9.315771024375336E-15 1.063828173463885E-12 6.539188974211151E-14 2.922115082564661E-13 7.391241506647991E-16
tp -3.861711863406402E-13 1.063828173463885E-12 4.134874623734431E-9 6.936035045315088E-12 1.288529311179296E-9 -1.25874463368267E-12
node -2.916525909557348E-14 6.539188974211151E-14 6.936035045315088E-12 5.161939433969725E-9 -5.136060016975422E-9 -7.307829751395434E-11
peri -1.031660901616376E-13 2.922115082564661E-13 1.288529311179296E-9 -5.136060016975422E-9 5.53254802961196E-9 7.243571975751045E-11
i -3.669726505577501E-16 7.391241506647991E-16 -1.25874463368267E-12 -7.307829751395434E-11 7.243571975751045E-11 2.438203261060012E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.27   n/a E2021B55  

192578 (1998 XU61)          Discovered 1998-Dec-15 by Spacewatch at Kitt Peak
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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