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

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1253348415796821 4.1027e-08  
a 2.754364531278168 1.9915e-08 au
q 2.409146689097724 1.1775e-07 au
i 10.36430102380948 4.1981e-06 deg
node 132.2868973649863 2.9941e-05 deg
peri 165.5579729463543 3.8109e-05 deg
M 170.5425951141096 2.4447e-05 deg
tp 2456609.528347484503
(2013-Nov-13.02834748)
0.00011367 JED
period 1669.6696488936
4.57
1.8108e-05
4.958e-08
d
yr
n .2156115134742687 2.3384e-09 deg/d
Q 3.099582373458613 2.2411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      9339 days (25.57 yr)  
   first obs. used      1990-05-26  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55781  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:35:35  

Additional Information
 Earth MOID = 1.39319 au 
 Jupiter MOID = 2.12699 au 
 T_jup = 3.309 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO350938  

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 | Physical Parameters | Discovery Circumstances ]
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