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18215 (4792 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2018215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04702137343689875 2.8462e-08  
a 2.930527936279023 1.3592e-08 au
q 2.792730487819983 8.2787e-08 au
i 2.400282409715277 4.0073e-06 deg
node 14.38072448921128 8.0274e-05 deg
peri 254.8234242363122 9.4513e-05 deg
M 87.26525131477771 4.8151e-05 deg
tp 2458756.322997926796
(2019-Sep-29.82299793)
0.00024573 TDB
period 1832.387099528985
5.02
1.2748e-05
3.49e-08
d
yr
n .1964650373780398 1.3668e-09 deg/d
Q 3.068325384738063 1.4231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      22025 days (60.30 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:25:16  

Additional Information
 Earth MOID = 1.77613 au 
 Jupiter MOID = 1.96724 au 
 T_jup = 3.274 
[ 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 14.47   n/a E2021B10  
diameter diameter 3.503 km 0.733 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.208   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18215 (4792 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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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
1941-Jun-14 12:21 00:02 Jupiter 1.99010657581265 1.99010616750738 1.99010698411792 3.26729964777997 3.13432826473362 2430160.014865315 1.52550628322826 42.1964821417514 15.7787271242419 82.8066210045541 4483465.26994121 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 02:25:21 2021-Apr-13 02:25
1976-Apr-01 18:40 < 00:01 Jupiter 1.97226222306821 1.97226188356819 1.97226256256823 3.37148963931157 3.24160568289144 2442870.277770011 0.816382958735298 41.8953994277195 12.5746734852116 89.8031152614619 4170073.29627156 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 02:25:21 2021-Apr-13 02:25
2106-Dec-17 10:18 00:02 Jupiter 1.97503385273715 1.9750335198247 1.97503418564982 3.33517479217923 3.20400706636898 2490610.928838797 1.9005585156502 66.6991618676233 10.236003567788 -86.0469841466291 4367878.70752501 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 02:25:21 2021-Apr-13 02:25
2141-Oct-06 19:46 00:03 Jupiter 1.9997690243818 1.99976842947516 1.99976961929048 3.60685134626253 3.48744265771259 2503323.323890763 2.58126533407591 129.13882443016 12.7478694742552 -81.7134986761509 4075605.9709729 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 02:25:21 2021-Apr-13 02:25

Alternate Designations
 4792 P-L = 1998 FE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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