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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249295811862559 4.1015e-08  
a 2.755410905304065 1.8273e-08 au
q 2.411178574908386 1.1737e-07 au
i 10.36237330270407 4.1758e-06 deg
node 132.286848699602 2.7944e-05 deg
peri 165.4922617030618 3.5399e-05 deg
M 213.7261689964337 2.357e-05 deg
tp 2458279.300449855732
(2018-Jun-09.80044986)
0.0001106 JED
period 1670.621192263063
4.57
1.6618e-05
4.55e-08
d
yr
n .2154887066363234 2.1436e-09 deg/d
Q 3.099643235699745 2.0556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1239  
   data-arc span      9411 days (25.77 yr)  
   first obs. used      1990-05-26  
   last obs. used      2016-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55899  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:28:29  

Additional Information
 Earth MOID = 1.3967 au 
 Jupiter MOID = 2.1279 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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