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JPL Small-Body Database Browser
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154689 (2004 HF2)
Classification: Main-belt Asteroid          SPK-ID: 2154689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2040450287169358 3.6543e-08  
a 2.199555670513313 1.1414e-08 au
q 1.750747270558925 8.2704e-08 au
i 3.577630595070288 3.6615e-06 deg
node 188.2887995673923 8.4852e-05 deg
peri 120.5452428493069 8.5978e-05 deg
M 260.3859158516681 1.5763e-05 deg
tp 2459330.200123718074
(2021-Apr-25.70012372)
5.3864e-05 TDB
period 1191.518704943033
3.26
9.2743e-06
2.539e-08
d
yr
n .3021354163443131 2.3517e-09 deg/d
Q 2.648364070467701 1.3743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      7466 days (20.44 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54727  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:25:18  

Additional Information
 Earth MOID = .739651 au 
 Jupiter MOID = 2.61844 au 
 T_jup = 3.636 
[ 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 16.8   n/a MPO469639  

154689 (2004 HF2)          Discovered 2004-Apr-16 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 HF2 = 1998 RC81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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