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48861 (1998 HR24)
Classification: Main-belt Asteroid          SPK-ID: 2048861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2282635840591475 3.1896e-08  
a 2.192293518141522 6.1998e-09 au
q 1.691872742380901 6.8952e-08 au
i 5.688427502996062 3.9252e-06 deg
node 48.35266412690549 3.351e-05 deg
peri 260.9319358750823 3.5195e-05 deg
M 224.7155741366494 1.2644e-05 deg
tp 2459446.045209685284
(2021-Aug-19.54520969)
4.2481e-05 TDB
period 1185.622620365163
3.25
5.0294e-06
1.377e-08
d
yr
n .303637931510722 1.288e-09 deg/d
Q 2.692714293902144 7.615e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1557  
   data-arc span      7959 days (21.79 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:15:31  

Additional Information
 Earth MOID = .68922 au 
 Jupiter MOID = 2.5921 au 
 T_jup = 3.631 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457020.5 (2014-Dec-29.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2288232991788792 3.1978e-08  
q 1.690559663574592 6.9192e-08 au
tp 2457074.718199994665
(2015-Feb-21.21819999)
3.8764e-05 TDB
node 48.37979618400322 3.3521e-05 deg
peri 260.9396390005148 3.5198e-05 deg
i 5.688367625169561 3.925e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1557  
   data-arc span      7959 days (21.79 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:15:31  

Additional Information
 Jupiter MOID = 2.5921 au 
 T_jup = 3.631 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.022571504091332E-15 -2.207657705885483E-15 7.032304948384398E-13 -6.527181301707748E-15 1.832936843996882E-13 6.573441987335332E-17
q -2.207657705885483E-15 4.787569204379947E-15 -1.498109683199251E-12 1.375511766354686E-14 -3.910193689338249E-13 -1.439330427757722E-16
tp 7.032304948384398E-13 -1.498109683199251E-12 1.502670957860352E-9 -9.740849867914381E-12 4.258019693047132E-10 -1.248735565905368E-12
node -6.527181301707748E-15 1.375511766354686E-14 -9.740849867914381E-12 1.123658925553267E-9 -1.12039170322569E-9 -4.895380777558895E-11
peri 1.832936843996882E-13 -3.910193689338249E-13 4.258019693047132E-10 -1.12039170322569E-9 1.238883797997534E-9 4.838095110597933E-11
i 6.573441987335332E-17 -1.439330427757722E-16 -1.248735565905368E-12 -4.895380777558895E-11 4.838095110597933E-11 1.540536383435336E-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 15.1   n/a MPO309528  
diameter diameter 2.625 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.256   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48861 (1998 HR24)          Discovered 1998-Apr-24 by Visnjan at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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