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101509 (1998 XN20)
Classification: Main-belt Asteroid          SPK-ID: 2101509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237909017860954 4.8159e-08  
a 2.737771908007378 1.8324e-08 au
q 2.398860654630505 1.349e-07 au
i 6.660910604822152 4.7679e-06 deg
node 279.9285169509842 4.4168e-05 deg
peri 259.0592689297184 4.9117e-05 deg
M 250.5789512849153 2.5804e-05 deg
tp 2459703.412804658441
(2022-May-03.91280466)
0.00012115 TDB
period 1654.604957666427
4.53
1.6611e-05
4.548e-08
d
yr
n .217574592854917 2.1843e-09 deg/d
Q 3.07668316138425 2.0592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      8068 days (22.09 yr)  
   first obs. used      1998-12-10  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:06  

Additional Information
 Earth MOID = 1.41318 au 
 Jupiter MOID = 1.9568 au 
 T_jup = 3.330 
[ 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 15.9   n/a MPO449615  
diameter diameter 3.729 km 0.951 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101509 (1998 XN20)          Discovered 1998-Dec-10 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1915-Nov-07 16:27 00:03 Jupiter 1.95464543197286 1.95464497732111 1.95464588662473 2.26238972530176 2.06197257296524 2420809.185750413 3.06561588615598 230.805277380372 17.202267051094 86.3228787813591 2438337.4182378 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:08 2021-Apr-13 15:37
2011-Apr-03 05:44 < 00:01 Jupiter 1.96508705869862 1.96508659700885 1.96508752038838 2.29949265178837 2.10370987147312 2455654.738731356 0.244160945520692 45.1528807768825 11.4177038680735 -77.7837533669526 2434093.34809963 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:08 2021-Apr-13 15:37
2069-Oct-22 02:18 00:02 Jupiter 1.96410863314069 1.96410814902647 1.9641091172558 2.36515352331165 2.1751897649696 2477041.595804639 1.61218999840418 144.422068337464 15.9909496002925 88.4382047602465 2536591.10307731 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:08 2021-Apr-13 15:37
2165-Mar-18 19:32 00:05 Jupiter 1.95706515443171 1.95706469441373 1.95706561444957 2.22166317724803 2.01746932008095 2511887.314181219 4.5226650171038 238.707730669778 13.3447790984481 -87.8518698867301 2351933.53785208 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:08 2021-Apr-13 15:37

Alternate Designations
 1998 XN20 = 2004 FC14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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