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74384 (1998 XQ20)
Classification: Main-belt Asteroid          SPK-ID: 2074384
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09844619852920829 4.2307e-08  
a 2.982072375281774 2.1232e-08 au
q 2.688498686196317 1.2754e-07 au
i 12.97290176367269 4.7063e-06 deg
node 111.5470427254327 2.4971e-05 deg
peri 8.7329775053059 4.918e-05 deg
M 50.95055951743539 3.9218e-05 deg
tp 2458734.291356057168
(2019-Sep-07.79135606)
0.0002048 TDB
period 1880.943265924774
5.15
2.0088e-05
5.5e-08
d
yr
n .191393332548499 2.0441e-09 deg/d
Q 3.275646064367231 2.3322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      7837 days (21.46 yr)  
   first obs. used      1998-12-10  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52635  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:43:55  

Additional Information
 Earth MOID = 1.70536 au 
 Jupiter MOID = 1.82666 au 
 T_jup = 3.213 
[ 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 14.7   n/a MPO324953  
diameter diameter 3.551 km 0.786 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.202   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74384 (1998 XQ20)          Discovered 1998-Dec-10 by Spacewatch at Kitt Peak
Reference: 20040415/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
1914-Jan-07 04:44 00:03 Jupiter 1.85799162256933 1.85799087062187 1.85799237452629 3.80820404703432 3.68655078223056 2420139.697042667 3.1924431083683 277.130887033268 22.5252012819114 -84.6322974624809 3289935.25739792 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
1950-Jul-15 02:17 00:02 Jupiter 1.85177127870794 1.85177048996409 1.85177206745496 3.39746042921225 3.2600480437336 2433477.594997684 2.15778972149138 181.071692914484 24.1036025178717 79.424071342664 2311834.79589688 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
2032-Jul-18 22:03 < 00:01 Jupiter 1.87615730594665 1.87615687782284 1.87615773407046 3.84078491707361 3.72138353480341 2463432.418707668 0.647312519288845 93.6966654341904 19.6275142930078 89.3561359733575 3448051.46442621 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
2069-Jan-22 22:33 00:02 Jupiter 1.84495833469027 1.84495768446811 1.8449589849139 3.39216922966719 3.25401440656718 2476769.439503782 1.80120859022207 157.964432529631 23.8393019067758 81.6634064416851 2354700.14126064 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
2105-Aug-30 05:57 00:03 Jupiter 1.9858844870459 1.98588321269189 1.98588576140477 2.9179893911246 2.76796296950302 2490136.747981112 3.25579693231723 201.030520741142 21.840187567128 74.6678058821448 1802555.46892078 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
2151-Jan-29 16:03 00:04 Jupiter 1.89653578061893 1.89653430063728 1.89653726061891 3.88144668101374 3.76462442809187 2506725.169087114 4.25105599183322 330.021892047812 26.6409976741399 -78.9442391294228 3623105.40766279 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
2187-Aug-05 08:15 00:06 Jupiter 1.84139881349152 1.84139810136449 1.84139952563865 3.39400897906764 3.25565964004686 2520061.843896969 5.63831547131363 469.941872878534 23.4942293722122 85.0018295398707 2413630.8791898 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 21:43:57 2020-Nov-12 21:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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