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134408 (1998 DA18)
Classification: Main-belt Asteroid          SPK-ID: 2134408
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013978507922979 3.4734e-08  
a 2.357554415697805 1.0931e-08 au
q 2.118503464820156 8.5296e-08 au
i 3.847661456150679 5.2894e-06 deg
node 42.48033936328613 5.6656e-05 deg
peri 235.1174848321702 6.4971e-05 deg
M 14.98658740896479 2.9157e-05 deg
tp 2459145.458372655869
(2020-Oct-22.95837266)
0.00010721 TDB
period 1322.181314742422
3.62
9.1954e-06
2.518e-08
d
yr
n .2722773313962108 1.8936e-09 deg/d
Q 2.596605366575455 1.2039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      10123 days (27.72 yr)  
   first obs. used      1992-10-03  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5666  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:15  

Additional Information
 Earth MOID = 1.10316 au 
 Jupiter MOID = 2.4917 au 
 T_jup = 3.543 
[ 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 16.80   n/a E2021B55  

134408 (1998 DA18)          Discovered 1998-Feb-23 by Spacewatch at Kitt Peak
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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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
1976-Jan-30 03:38 00:02 Amphi 0.0143092181606245 0.014303847264759 0.0143145915308214 3.09951366050632 3.09951353088884 2442807.651697122 1.86481526275643 405.225152843649 60.2848986141622 49.4025264559416 27155.2448894978 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 18:08:16 2021-Apr-13 18:08

Alternate Designations
 1998 DA18 = 2002 JK94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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