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22741 (1998 SQ154)
Classification: Main-belt Asteroid          SPK-ID: 2022741
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004506482649688 3.9818e-08  
a 2.684143533111176 1.1316e-08 au
q 2.414519575173935 1.0616e-07 au
i 3.040852693218155 3.37e-06 deg
node 302.924638813666 8.3691e-05 deg
peri 234.1572942522008 8.5685e-05 deg
M 219.0627513859628 2.0634e-05 deg
tp 2459829.325751768461
(2022-Sep-06.82575177)		 9.4083e-05 TDB
period 1606.22740164731
4.40		 1.0158e-05
2.781e-08		 d
yr
n .2241276668738139 1.4174e-09 deg/d
Q 2.953767491048418 1.2453e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1637  
   data-arc span      12426 days (34.02 yr)  
   first obs. used      1987-02-23  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49037  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:09  

Additional Information
 Earth MOID = 1.41974 au 
 Jupiter MOID = 2.02196 au 
 T_jup = 3.366 
[ 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 14.20   n/a E2021B10  

22741 (1998 SQ154)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SQ154 = 1987 DB3 = 1999 XP225 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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