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(2018 XM2)
Classification: Apollo [NEO]          SPK-ID: 3836849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2411386818824547 0.00057072  
a 1.248729802972059 0.00096542 au
q .9476127442560395 1.9991e-05 au
i 22.47900940800325 0.033705 deg
node 257.3946839742947 0.0019211 deg
peri 228.6283242943031 0.039279 deg
M 268.6915850652378 0.69849 deg
tp 2459525.773481570956
(2021-Nov-07.27348157)
1.1388 TDB
period 509.6841665556767
1.40
0.59107
0.001618
d
yr
n .7063197635366891 0.00081911 deg/d
Q 1.549846861688079 0.0011982 au
  Orbit Determination Parameters
   # obs. used (total)      44  
   data-arc span      4 days  
   first obs. used      2018-12-10  
   last obs. used      2018-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .47005  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:57  

Additional Information
 Earth MOID = .0277426 au 
 Jupiter MOID = 3.64344 au 
 T_jup = 5.046 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.4   .5228 E2018Y42 autocmod 2.6q

[ 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
2005-May-01 19:41 3_16:25 Earth 0.402828371213451 0.330870090048901 0.607789047138095 14.9268867906645 14.9264436623369 2453492.319939029 5305.2938155863 13966129.6374137 955.387800239056 55.2267900175929 39468.3906621926 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2011-Dec-20 01:01 6_09:23 Earth 0.208077795413066 0.0550080301419081 0.362364974271543 12.2517996420329 12.2507544279362 2455915.542156416 9203.08184849366 7704375.38515632 640.179841708659 -3.99205751783646 3207.60532197291 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2012-May-06 17:12 5_15:26 Earth 0.326668337411964 0.31665878857588 0.384612109067936 12.6432735488373 12.642628404543 2456054.216383133 8125.67310414912 6885742.58291033 748.372924169741 75.7900828544341 42043.4254617905 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2018-Dec-12 03:06 < 00:01 Earth 0.0357894385988419 0.0356165027649595 0.0359623729356158 12.8658527890091 12.8600649480362 2458464.629509962 0.275109279007662 8615.84179905893 621.522257974465 -0.187640746458291 434.220826884136 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2019-May-15 07:48 06:16 Earth 0.311951919343258 0.308963721768935 0.314944957972076 11.8705436059702 11.8698240455775 2458618.824885890 375.744048711372 161230.708033114 797.384821501569 22.3452272492037 20865.499160884 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2025-Dec-05 16:39 6_16:29 Earth 0.124890718411544 0.0123071737129645 0.276269426454353 14.7887121663054 14.7872694763082 2461015.193603675 9628.95145974868 7565243.24378325 529.079826671262 5.66473571752039 3251.98016307361 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2026-May-22 05:31 7_19:46 Earth 0.333201525700767 0.32395641766167 0.389590446199907 11.7963097478036 11.7956318383552 2461182.729729231 11266.0179718012 6905529.11114397 329.593339307972 -76.4758951282262 68559.4522365086 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2085-Dec-01 15:52 7_04:14 Earth 0.220917316874304 0.0636756803402749 0.380573864726397 16.591722835149 16.5909958917006 2482926.161061521 10334.2484112106 7984949.87580132 557.093463687369 5.78970781726117 5422.85890580903 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
2086-May-27 10:16 6_17:46 Earth 0.358398380371982 0.328388645196772 0.42986830129753 11.8417878009351 11.8411599731139 2483102.927563380 9706.20042366393 6664957.28681389 341.572514427036 -66.3229527278692 71870.7905440561 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 20:55:57 2021-Apr-15 20:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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