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180694 (2004 HD28)
Classification: Main-belt Asteroid          SPK-ID: 2180694
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1268804017953308 5.8889e-08  
a 2.603868872237078 2.1444e-08 au
q 2.273488943505283 1.5795e-07 au
i 4.454307595730109 4.7891e-06 deg
node 97.71138484177268 6.7277e-05 deg
peri 72.89708287288623 6.9541e-05 deg
M 24.5202293620756 1.953e-05 deg
tp 2459095.968033840837
(2020-Sep-03.46803384)
8.2707e-05 TDB
period 1534.712716655976
4.20
1.8959e-05
5.191e-08
d
yr
n .2345715886061158 2.8978e-09 deg/d
Q 2.934248800968874 2.4165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      6643 days (18.19 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54974  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:33  

Additional Information
 Earth MOID = 1.284 au 
 Jupiter MOID = 2.04103 au 
 T_jup = 3.397 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.31   n/a E2021B55  

180694 (2004 HD28)          Discovered 2004-Apr-20 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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