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152671 (1998 HL3)
Classification: Apollo [NEO, PHA]          SPK-ID: 2152671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 82 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3660171142295798 6.6193e-08  
a 1.128843182048766 9.6131e-09 au
q .7156672581375403 7.5228e-08 au
i 2.679729406165457 4.2434e-06 deg
node 163.6714243206566 0.00010423 deg
peri 188.1318083507506 0.00010438 deg
M 215.9259541738612 3.1116e-05 deg
tp 2459375.820257380532
(2021-Jun-10.32025738)
3.915e-05 TDB
period 438.0753819682126
1.20
5.5959e-06
1.532e-08
d
yr
n .8217763764367889 1.0497e-08 deg/d
Q 1.542019105959991 1.3132e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -5.466653453470862E-14 1.788E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1998-04-21  
   last obs. used      2018-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56571  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:12:08  

Additional Information
 Earth MOID = .0453939 au 
 Jupiter MOID = 3.89046 au 
 T_jup = 5.475 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 20.1   n/a MPO382080  
diameter diameter 0.298 km 0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.200   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

152671 (1998 HL3)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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