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JPL Small-Body Database Browser
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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234609018022811 2.968e-08  
a 2.756363899396727 1.1097e-08 au
q 2.416060726681955 8.126e-08 au
i 10.35513088925946 3.2123e-06 deg
node 132.1831655572321 2.0888e-05 deg
peri 165.8424044783402 2.5715e-05 deg
M 154.9712788526987 1.5347e-05 deg
tp 2458280.964918919973
(2018-Jun-11.46491892)
7.1063e-05 TDB
period 1671.487975749506
4.58
1.0094e-05
2.764e-08
d
yr
n .2153769606619956 1.3007e-09 deg/d
Q 3.096667072111498 1.2467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2095  
   data-arc span      10841 days (29.68 yr)  
   first obs. used      1990-05-26  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:54:11  

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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