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447297 (2005 WM78)
Classification: Main-belt Asteroid          SPK-ID: 2447297
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07106695677709594 5.5484e-08  
a 3.078867726753402 5.1288e-08 au
q 2.860061967093822 2.0023e-07 au
i 13.36956427699592 7.1689e-06 deg
node 68.64148595474812 2.2827e-05 deg
peri 246.1193380973959 7.5318e-05 deg
M 39.40500102000146 6.5544e-05 deg
tp 2458984.509914622714
(2020-May-15.00991462)
0.00036202 TDB
period 1973.263005280845
5.40
4.9307e-05
1.35e-07
d
yr
n .1824389344129841 4.5587e-09 deg/d
Q 3.297673486412981 5.4933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      5362 days (14.68 yr)  
   first obs. used      2005-11-25  
   last obs. used      2020-07-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48302  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 15:01:12  

Additional Information
 Earth MOID = 1.87446 au 
 Jupiter MOID = 1.90119 au 
 T_jup = 3.183 
[ show covariance matrix ]

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 15.98   n/a E2021B25  

447297 (2005 WM78)          Discovered 2005-Nov-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28

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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-Mar-13 00:26 00:06 Jupiter 1.92747027607596 1.92746885752976 1.92747169465799 4.43563594423691 4.33543200769757 2426048.517937050 6.25960280595981 457.373490240532 22.6200430089795 -81.2596762089518 2440686.58026677 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 15:01:13 2021-Apr-14 15:01
1989-Nov-19 07:24 00:02 Jupiter 1.9709955542128 1.97099461728338 1.97099649114546 4.24990786050712 4.14755709302111 2447849.808071938 1.88594211227156 157.87829533426 20.5858973179727 -74.7019407058333 2457860.33476391 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 15:01:13 2021-Apr-14 15:01
2059-Jul-12 04:56 00:03 Jupiter 1.96921967754599 1.96921804867517 1.96922130642184 4.68161494625568 4.58881863029205 2473286.705354249 3.31757956934416 229.608156801052 50.5018226824069 -74.5069117344492 1820327.42523698 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 15:01:13 2021-Apr-14 15:01
2119-Mar-20 01:15 00:08 Jupiter 1.93408743692702 1.93408569788456 1.93408917597025 4.68415027637891 4.58970317899062 2495086.551741890 7.67909641849428 173.29304508095 74.3512015727966 77.0075060463228 1672145.68257597 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 15:01:13 2021-Apr-14 15:01
2178-Nov-23 11:46 00:12 Jupiter 1.92571063874021 1.92570987047326 1.92571140702183 4.60813554164572 4.51167535779817 2516884.990386403 12.0700795299837 581.067361813224 31.0745253959926 89.1488426816475 2418133.53893832 T 14 CATAB v2.0f-lin.ifort 2021-Apr-14 15:01:13 2021-Apr-14 15:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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