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(2013 XS21)
Classification: Apollo [NEO]          SPK-ID: 3654484
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4943921035297747 0.0002217  
a 1.914773313873377 0.00082579 AU
q .9681245074448406 6.9781e-06 AU
i 3.07922816015511 0.0010361 deg
node 80.43947519072599 7.3167e-05 deg
peri 341.0859154953544 0.0011219 deg
M 65.74195641579938 0.042659 deg
tp 2456623.768241247506
(2013-Nov-27.26824125)
0.00035322 JED
period 967.7751715890186
2.65
0.62606
0.001714
d
yr
n .3719872244799434 0.00024064 deg/d
Q 2.861422120301913 0.001234 AU
  Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      2 days  
   first obs. used      2013-12-12  
   last obs. used      2013-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      6  
   fit RMS      .65622  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-21 19:37:59  

Additional Information
 Earth MOID = .00029095 AU 
 T_jup = 3.771 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 29.4 mag n/a MPO279472  

[ 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
1942-Oct-02 04:30 00:46 Earth 0.202075723603768 0.188009601733423 0.21603017494942 14.1154170193935 14.1144828645458 2430634.687179411 45.7567696199964 650035.80118597 443.464741228589 1.85861964397485 1721.31315924753 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
1945-May-06 06:25 1_12:05 Mars 0.0860047001836022 0.0384356232289999 0.133894730938931 13.9124195961764 13.9121803279295 2431581.767154261 2165.37840765533 2298638.39393162 1117.59440792077 -8.1951563892969 1541.13292175918 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
2012-Nov-13 03:24 17:01 Iris 0.0218459509829447 0.0217108300445699 0.0223955670763702 3.77211709355341 3.77211702379173 2456244.641530538 1020.80456649635 152586.045206633 130.72564147997 83.5834998502873 24827.3610417131 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
2013-Dec-11 15:25 < 00:01 Moon 0.00229980518689693 0.00229929534733545 0.00230031718941494 6.99288948208435 6.99085134049206 2456638.142170632 0.264802474741426 77.2421630815533 5.56016135180709 60.3934627280929 50686.1118586045 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
2013-Dec-11 23:27 < 00:01 Earth 0.000484745553093425 0.000484045766894733 0.000485444938584794 8.26502640079855 7.5708222997202 2456638.476769575 0.0710390229185895 29.207665510085 0.398919762516426 1.00709547895324 1304.79772541059 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
2021-Oct-07 14:25 2_10:44 Earth 0.165008167609041 0.0735936354945644 0.253679355405597 12.5417858450432 12.5404982780714 2459495.100637686 3524.15998906945 4013995.48855443 118.178882430812 13.2427667725285 35717.4849012444 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
2111-Oct-20 12:39 2_06:23 Earth 0.0813126160260507 0.042735027961933 0.126121970639238 9.64876963989302 9.64537292625025 2492379.027367421 3263.34678859712 1864926.78309905 90.0402341515781 25.316709622875 37750.350605915 T 2 CATAB v2.0c-linF95 2014-Jan-21 19:38:21 2014-Jan-21 19:38
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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