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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300249754928274 3.9255e-08  
a 3.179709184810139 2.9341e-08 au
q 2.766267575980883 1.2154e-07 au
i 6.302418989858327 3.8215e-06 deg
node 85.2133749506506 4.0135e-05 deg
peri 136.5013666345454 4.2921e-05 deg
M 213.1183065296458 1.7693e-05 deg
tp 2460241.476633196982
(2023-Oct-23.97663320)
0.00010825 TDB
period 2070.997281988105
5.67
2.8665e-05
7.848e-08
d
yr
n .1738292962192635 2.406e-09 deg/d
Q 3.593150793639395 3.3156e-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 = 1.76233 au 
 Jupiter MOID = 1.40561 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 = 1.40561 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-May-24 09:02 00:05 Jupiter 1.78516961756575 1.78516650848103 1.78517272665787 2.83462411233551 2.6619803156969 2426120.876292076 4.97585440043356 248.714264186343 18.4780317555276 -63.9469004646214 2115436.7841702 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
1941-May-14 04:29 00:04 Jupiter 1.54212782079156 1.54212618327027 1.54212945831618 2.04353017622119 1.75428166527307 2430128.687092073 4.01268880987166 184.113265254228 31.1897799512251 88.7168087696595 1333273.05781205 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
1952-May-20 07:13 00:03 Jupiter 1.46438330174539 1.4643829028691 1.46438370062234 1.60586314778842 1.19246163497744 2434152.800631528 3.11343074071791 241.936806163774 102.074892586769 -66.4801909802732 1725651.72240323 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
1963-May-15 03:18 00:03 Jupiter 1.57433714619301 1.57433614591132 1.57433814648535 1.78041443832935 1.44701021787521 2438164.637779403 2.49757692201219 282.205550390402 31.6835015588436 79.086605409113 2409926.00883613 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
1974-Apr-15 12:18 00:02 Jupiter 1.82110226527457 1.82110114605856 1.8211033844912 2.85685149874982 2.68912065603748 2442153.012381829 1.88371781603124 95.2506837038054 20.0529866862076 -74.692823611475 2336924.21202138 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
2073-Feb-17 02:42 00:03 Jupiter 1.85449780109439 1.85449633079041 1.85449927140017 2.96439535046041 2.80609348958324 2478255.612764430 2.50865263456822 127.65330230712 17.0592309250711 -64.9279486108945 2491304.03576269 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
2084-Feb-07 18:05 00:03 Jupiter 1.58852226208409 1.58852100760204 1.58852351657039 2.21418222815991 1.95861550223211 2482263.253287569 3.05277524433296 167.803258885175 15.1578703976334 -82.3460560054303 1932096.43734344 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
2095-Feb-15 15:07 00:04 Jupiter 1.46947545248471 1.46947505374315 1.46947585122653 1.78128000636465 1.42131471310131 2486289.130193744 3.74406934443814 137.967369973942 72.5684701610649 -65.4483163894524 1561144.74684869 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
2106-Feb-17 05:17 00:05 Jupiter 1.54441010076906 1.54440838275842 1.5444118188415 1.76741132304496 1.42367647657262 2490307.720283833 4.87932190612865 580.543683447309 45.054619167008 87.8701246995182 2235729.0135367 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38
2117-Jan-22 07:40 00:06 Jupiter 1.7713124148656 1.7713093385069 1.77131549123929 2.59967239158644 2.40871710528951 2494299.819540492 5.91999493584666 321.895062489199 16.5187226136791 -78.0367897154943 2633222.47520867 T 19 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:08 2021-Apr-14 00:38

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