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227021 (2004 XA168)
Classification: Main-belt Asteroid          SPK-ID: 2227021
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1302555595686785 3.9255e-08  
a 3.178999115284956 2.9353e-08 au
q 2.76491680665518 1.215e-07 au
i 6.302879916876816 3.8219e-06 deg
node 85.21096735273963 4.0134e-05 deg
peri 136.5484084152339 4.291e-05 deg
M 178.9918500985091 1.7427e-05 deg
tp 2458171.145911818523
(2018-Feb-21.64591182)
9.4007e-05 TDB
period 2070.303600646555
5.67
2.8674e-05
7.851e-08
d
yr
n .1738875399180933 2.4084e-09 deg/d
Q 3.593081423914732 3.3177e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      7649 days (20.94 yr)  
   first obs. used      2000-02-03  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51177  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:07  

Additional Information
 Earth MOID = 1.75929 au 
 Jupiter MOID = 1.40686 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457674.5 (2016-Oct-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306766852539626 3.9232e-08  
q 2.763324763039613 1.215e-07 au
tp 2458176.574319065418
(2018-Feb-27.07431907)
9.3868e-05 TDB
node 85.26141928122222 4.0195e-05 deg
peri 137.5830855780249 4.2974e-05 deg
i 6.299117393221813 3.819e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      7649 days (20.94 yr)  
   first obs. used      2000-02-03  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51177  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:07  

Additional Information
 Jupiter MOID = 1.40686 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.539163672394434E-15 -4.665964015229827E-15 -1.693828932786008E-13 -9.748735033650329E-16 -5.18267158098699E-14 8.961067317313281E-16
q -4.665964015229827E-15 1.476237026935543E-14 1.392270685737547E-12 2.573279477111775E-15 2.715220755159803E-13 -2.185893351837152E-15
tp -1.693828932786008E-13 1.392270685737547E-12 8.811129813019686E-9 -8.273152781024501E-12 1.454748308760882E-9 8.078352473949231E-13
node -9.748735033650329E-16 2.573279477111775E-15 -8.273152781024501E-12 1.615634690881543E-9 -1.607176128021021E-9 -2.029198209175388E-11
peri -5.18267158098699E-14 2.715220755159803E-13 1.454748308760882E-9 -1.607176128021021E-9 1.846765749121759E-9 2.026141439656763E-11
i 8.961067317313281E-16 -2.185893351837152E-15 8.078352473949231E-13 -2.029198209175388E-11 2.026141439656763E-11 1.458496583846763E-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 15.23   n/a MPCxxxxx  

227021 (2004 XA168)          Discovered 2004-Dec-03 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2004 XA168 = 2000 DH84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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