Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
161484 (2004 HU42)
Classification: Jupiter Trojan          SPK-ID: 2161484
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02410956609250555 1.0198e-07  
a 5.211234598487715 2.539e-07 au
q 5.085593993511924 6.541e-07 au
i 17.3887266719014 1.1474e-05 deg
node 33.30267281366952 2.7075e-05 deg
peri 309.5727760476673 0.00028211 deg
M 4.113425943799106 0.00029355 deg
tp 2458950.850995397317
(2020-Apr-11.35099540)
0.003542 TDB
period 4345.195926988765
11.90
0.00031756
8.694e-07
d
yr
n .08285011908530467 6.055e-09 deg/d
Q 5.336875203463506 2.6003e-07 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6820 days (18.67 yr)  
   first obs. used      1997-10-06  
   last obs. used      2016-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61827  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-11 08:06:31  

Additional Information
 Earth MOID = 4.1052 au 
 Jupiter MOID = .154989 au 
 T_jup = 2.908 
[ 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 12.5   n/a MPO475391  

161484 (2004 HU42)          Discovered 2004-Apr-20 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 2004 HU42 = 1997 TG29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-07 10:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin