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162082 (1998 HL1)
Classification: Apollo [NEO, PHA]          SPK-ID: 2162082
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 153 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870168602831163 8.6222e-09  
a 1.246296531466364 2.1484e-09 au
q 1.013218067169787 9.8468e-09 au
i 20.0518090181891 3.8875e-06 deg
node 213.5391082775043 8.0716e-07 deg
peri 148.6506952305535 6.3016e-06 deg
M 95.32906108720972 3.4915e-06 deg
tp 2459261.928429372369
(2021-Feb-16.42842937)
4.9912e-06 TDB
period 508.1951387481681
1.39
1.3141e-06
3.598e-09
d
yr
n .7083893027524512 1.8317e-09 deg/d
Q 1.479374995762941 2.5502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1394  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-04-18  
   last obs. used      2020-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36611  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-03 06:41:08  

Additional Information
 Earth MOID = .041496 au 
 Jupiter MOID = 3.92573 au 
 T_jup = 5.078 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458118.5 (2017-Dec-31.0) TDB
Reference: JPL 153 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1871774019156574 8.6549e-09  
q 1.013015724301518 9.8442e-09 au
tp 2458245.462354501132
(2018-May-06.96235450)
6.1194e-06 TDB
node 213.5689263213883 8.1042e-07 deg
peri 148.5193556519436 6.2858e-06 deg
i 20.04867269510725 3.8897e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1394  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-04-18  
   last obs. used      2020-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36611  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-03 06:41:08  

Additional Information
 Jupiter MOID = 3.92573 au 
 T_jup = 5.078 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.490698159423438E-17 -8.435787925848448E-17 -5.283972251546709E-14 3.625840859153249E-15 -5.359093574739327E-14 -2.848982424132232E-15
q -8.435787925848448E-17 9.690752627389697E-17 5.922639975545534E-14 -4.207608382698455E-15 6.160953287513825E-14 3.188048500475859E-15
tp -5.283972251546709E-14 5.922639975545534E-14 3.744654802703531E-11 -2.339370923321831E-12 3.763018919496262E-11 1.885576320870176E-12
node 3.625840859153249E-15 -4.207608382698455E-15 -2.339370923321831E-12 6.567849627461051E-13 -2.774496627908617E-12 -1.296172306076387E-12
peri -5.359093574739327E-14 6.160953287513825E-14 3.763018919496262E-11 -2.774496627908617E-12 3.951156803411543E-11 3.041223961673955E-12
i -2.848982424132232E-15 3.188048500475859E-15 1.885576320870176E-12 -1.296172306076387E-12 3.041223961673955E-12 1.51298148048143E-11

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 19.13   n/a MPO637883  
rotation period rot_per 11.7864 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
[Franco, L.; Marchini, A.; Scarfi, G.; Bacci, P.; et al. (2020) Minor Planet Bull. 47, 144-147.]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 105-120.]

162082 (1998 HL1)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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