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52741 (1998 HW116)
Classification: Main-belt Asteroid          SPK-ID: 2052741
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053570545415154 3.3256e-08  
a 3.01255484957959 1.7661e-08 au
q 2.695160943983126 9.7936e-08 au
i 13.79968528822668 4.5336e-06 deg
node 59.62043548276249 1.5074e-05 deg
peri 85.82703548204188 2.6303e-05 deg
M 178.1848811648574 2.1332e-05 deg
tp 2458255.200948495556
(2018-May-16.70094850)
0.0001121 TDB
period 1909.857089540305
5.23
1.6795e-05
4.598e-08
d
yr
n .1884957790672445 1.6576e-09 deg/d
Q 3.329948755176053 1.9522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1399  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:36  

Additional Information
 Earth MOID = 1.75148 au 
 Jupiter MOID = 1.84658 au 
 T_jup = 3.197 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO474412  
diameter diameter 8.040 km 0.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.24709 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.099   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52741 (1998 HW116)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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