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15022 (1998 SM144)
Classification: Main-belt Asteroid          SPK-ID: 2015022
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1789554287617346 3.11e-08  
a 2.404837891574998 8.3919e-09 au
q 1.974479095585729 7.725e-08 au
i 2.235898044086046 3.6152e-06 deg
node 209.4944078360121 8.8993e-05 deg
peri 245.2660303159191 8.9713e-05 deg
M 288.9226347127925 1.3835e-05 deg
tp 2459469.440344171320
(2021-Sep-11.94034417)
5.3137e-05 TDB
period 1362.15690481004
3.73
7.13e-06
1.952e-08
d
yr
n .264286734317295 1.3834e-09 deg/d
Q 2.835196687564268 9.8936e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      10575 days (28.95 yr)  
   first obs. used      1992-01-30  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:45:19  

Additional Information
 Earth MOID = .992228 au 
 Jupiter MOID = 2.34683 au 
 T_jup = 3.500 
[ 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 15.53   n/a E2021B10  

15022 (1998 SM144)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20000523/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
1919-Jun-18 22:53 00:10 Psych 0.0276775513878886 0.0276739066075606 0.0276811964715274 2.08821683981434 2.08821663047545 2422128.453412675 9.82192089819966 233.12426041415 36.4006584908075 39.6231946679588 73575.6509638061 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 00:45:26 2021-Apr-13 00:45

Alternate Designations
 1998 SM144 = 1992 CS6 = 1996 EJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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