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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255550019016719 4.2215e-08  
a 2.75431733691926 2.203e-08 AU
q 2.408499018444554 1.227e-07 AU
i 10.36456052101039 4.3207e-06 deg
node 132.2865373958568 3.0743e-05 deg
peri 165.6376963927154 3.9359e-05 deg
M 84.18410747534435 2.5003e-05 deg
tp 2456610.066565054813
(2013-Nov-13.56656505)
0.00011644 JED
period 1669.62673591845
4.57
2.0032e-05
5.484e-08
d
yr
n .2156170551509326 2.5869e-09 deg/d
Q 3.100135655393965 2.4796e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      8925 days (24.44 yr)  
   first obs. used      1990-05-26  
   last obs. used      2014-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56965  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:28:18  

Additional Information
 Earth MOID = 1.3955 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 13.5 mag n/a MPO266046  

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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