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17020 Hopemeraengus (1999 DH4)
Classification: Main-belt Asteroid          SPK-ID: 2017020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234609018750285 2.9585e-08  
a 2.756363899334103 1.1009e-08 au
q 2.416060726426544 8.0889e-08 au
i 10.35513072995406 3.1811e-06 deg
node 132.1831646959903 2.0732e-05 deg
peri 165.8424053729685 2.5513e-05 deg
M 154.9712788338786 1.529e-05 deg
tp 2458280.964919031877
(2018-Jun-11.46491903)
7.075e-05 TDB
period 1671.487975692542
4.58
1.0014e-05
2.742e-08
d
yr
n .2153769606693355 1.2904e-09 deg/d
Q 3.096667072241662 1.2369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2120  
   data-arc span      10927 days (29.92 yr)  
   first obs. used      1990-05-26  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:31:09  

Additional Information
 Earth MOID = 1.4019 au 
 Jupiter MOID = 2.13952 au 
 T_jup = 3.309 
[ 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 13.6   n/a MPO452412  

17020 Hopemeraengus           Discovered 1999 Feb. 24 by I. P. Griffin at Cocoa.
Hope (b. 1994), Merope (b. 1995) and Aengus (b. 1998) are the children of discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 DH4 = 1990 KJ1 = 1998 BR23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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