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173942 (2001 WW56)
Classification: Main-belt Asteroid          SPK-ID: 2173942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1894552850480043 6.2727e-08  
a 3.044868684262772 2.7886e-08 au
q 2.468002219752027 1.8467e-07 au
i .5617305394801173 5.8226e-06 deg
node 254.7294400176736 0.00066807 deg
peri 109.2778312032299 0.00066828 deg
M 205.4454211855379 1.9803e-05 deg
tp 2459833.664301383569
(2022-Sep-11.16430138)
0.00011569 TDB
period 1940.668149716563
5.31
2.666e-05
7.299e-08
d
yr
n .185503121722577 2.5483e-09 deg/d
Q 3.621735148773518 3.3169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      6762 days (18.51 yr)  
   first obs. used      2001-10-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60378  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:33:13  

Additional Information
 Earth MOID = 1.46597 au 
 Jupiter MOID = 1.84165 au 
 T_jup = 3.211 
[ 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 16.1   n/a MPO251411  

173942 (2001 WW56)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ 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
1945-Mar-21 14:40 00:03 Jupiter 1.8432608812749 1.84326028925133 1.84326147329806 1.76703254969273 1.48437061994421 2431536.111295671 3.26421853413306 191.008069868223 41.2011795843948 -87.758174193239 1693473.7738989 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
1993-Sep-16 13:22 00:01 Jupiter 1.89583075523527 1.8958298974673 1.89583161300238 1.94502014470153 1.69986468099065 2449247.057221365 1.07729529545024 85.8837222604673 25.2810601984928 89.5486511893879 1259623.43302962 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
2003-Mar-06 10:43 < 00:01 Jupiter 1.9578558220803 1.95785526533368 1.95785637882692 2.50412847435643 2.32495250804016 2452704.946434789 0.687973995887907 70.794154117886 9.17023061398063 86.4640512593697 2132157.61268018 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
2051-Sep-01 05:40 00:02 Jupiter 1.85393439540892 1.85393378507719 1.85393500574107 1.85133675505282 1.58546240893917 2470415.735857849 1.59533884884978 117.866576537041 32.2083301480341 -81.6197338214397 1858219.52312332 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
2100-Feb-27 18:23 00:04 Jupiter 1.8573271761248 1.85732661313727 1.85732773911181 1.79086777615192 1.51496528712735 2488127.266070937 3.78398992061013 179.070738279603 38.789826070197 -89.4807740437287 1672551.73768012 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
2148-Aug-24 10:02 00:06 Jupiter 1.9627791606196 1.96277787794532 1.96278044329677 2.30350935227801 2.10785920977492 2505836.918341284 5.94648804829569 180.785258461231 8.62267281921448 89.0092491665739 1545405.32768639 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
2158-Feb-13 06:41 00:06 Jupiter 1.89422214605168 1.89422075395908 1.89422353815871 2.05537445611779 1.82489503652222 2509296.778169342 6.40884196976002 322.669284522672 17.7798400318777 -82.8843782998607 1915749.93219804 T 9 CATAB v2.0f-lin.ifort 2020-May-21 03:33:17 2020-May-21 03:33
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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