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JPL Small-Body Database Browser
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49346 (1998 WK4)
Classification: Main-belt Asteroid          SPK-ID: 2049346
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2382508698757753 5.4781e-08  
a 2.710939718816628 1.8431e-08 au
q 2.065055972627777 1.4918e-07 au
i 2.886645503670517 5.0946e-06 deg
node 73.3310114927753 0.00011561 deg
peri 308.2525611994942 0.00011602 deg
M 327.5552810957643 1.5789e-05 deg
tp 2459147.433130923434
(2020-Oct-24.93313092)
7.2611e-05 TDB
period 1630.340126803527
4.46
1.6627e-05
4.552e-08
d
yr
n .2208128194119973 2.2519e-09 deg/d
Q 3.356823465005479 2.2823e-08 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      7577 days (20.74 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:16:25  

Additional Information
 Earth MOID = 1.06967 au 
 Jupiter MOID = 2.10258 au 
 T_jup = 3.320 
[ 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 15.1   n/a MPO432052  

49346 (1998 WK4)          Discovered 1998-Nov-21 by Comba, P. G. at Prescott
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ 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
1982-Nov-04 05:52 00:06 Psych 0.0404312860577956 0.0404303375176771 0.0404322346449833 1.41799082511861 1.41799061407986 2445277.744210008 6.23225690997821 148.513121845644 41.1228293181049 80.8416819213682 144326.130046342 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 02:16:27 2019-Sep-24 02:16
2107-Aug-21 17:11 00:17 Psych 0.0336104711446706 0.0336090737234781 0.0336118702620783 1.45573759094954 1.45573734366583 2490858.215964364 16.8898837320108 513.196562205286 46.9367575719157 -84.2343897076813 105872.089595807 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 02:16:27 2019-Sep-24 02:16
2195-Dec-17 18:07 00:05 Europ 0.0447695193681686 0.0447606184062975 0.044778439387235 4.14106855773868 4.14106850040935 2523118.254786327 4.7543581764382 1535.70433915812 62.2532625634698 73.3532934057656 103016.650708399 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 02:16:27 2019-Sep-24 02:16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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