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118269 (1998 HL74)
Classification: Main-belt Asteroid          SPK-ID: 2118269
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 .2394767122117592 4.6563e-08  
a 2.772169488314971 1.2699e-08 au
q 2.108299453559547 1.3007e-07 au
i 7.236903791970242 4.5023e-06 deg
node 194.7137997114096 2.8808e-05 deg
peri 357.0574893942155 2.9886e-05 deg
M 338.1442673214476 7.3162e-06 deg
tp 2459302.850734815057
(2021-Mar-29.35073482)
3.4432e-05 TDB
period 1685.885578641737
4.62
1.1584e-05
3.172e-08
d
yr
n .2135376235260523 1.4673e-09 deg/d
Q 3.436039523070395 1.574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      8410 days (23.03 yr)  
   first obs. used      1998-03-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:28  

Additional Information
 Earth MOID = 1.10764 au 
 Jupiter MOID = 1.52171 au 
 T_jup = 3.283 
[ 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 15.02   n/a E2021B55  

118269 (1998 HL74)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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