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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .228040110469817 3.2038e-08  
a 2.192597885592689 6.3341e-09 au
q 1.692597621546245 6.9395e-08 au
i 5.688795805182569 4.9812e-06 deg
node 48.36378490458519 3.5586e-05 deg
peri 260.8868677232491 3.7695e-05 deg
M 103.3316359930366 1.3558e-05 deg
tp 2458260.117112644230
(2018-May-21.61711264)
4.4297e-05 TDB
period 1185.869538118362
3.25
5.1387e-06
1.407e-08
d
yr
n .3035747090453285 1.3155e-09 deg/d
Q 2.692598149639133 7.7786e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1443  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50637  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:05  

Additional Information
 Earth MOID = .689157 au 
 Jupiter MOID = 2.58979 au 
 T_jup = 3.631 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456700.5 (2014-Feb-12.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2287052964815765 3.2155e-08  
q 1.690590579738473 6.9682e-08 au
tp 2457074.804683259666
(2015-Feb-21.30468326)
4.3216e-05 TDB
node 48.380801970063 3.5603e-05 deg
peri 260.9666347721115 3.7696e-05 deg
i 5.688627521238725 4.9811e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1443  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50637  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:05  

Additional Information
 Jupiter MOID = 2.58979 au 
 T_jup = 3.631 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.033920095651601E-15 -2.23533287795007E-15 7.664289121686585E-13 -8.461294698787602E-16 1.996562740770185E-13 -1.489851100377582E-15
q -2.23533287795007E-15 4.855636715100903E-15 -1.658306081577542E-12 1.361339596784224E-15 -4.346211678547648E-13 3.255225207003872E-15
tp 7.664289121686585E-13 -1.658306081577542E-12 1.867654775615881E-9 -5.267542003328564E-13 5.444568902270324E-10 -4.035060248567798E-12
node -8.461294698787602E-16 1.361339596784224E-15 -5.267542003328564E-13 1.267576731336371E-9 -1.260993323163403E-9 -8.565350696931628E-11
peri 1.996562740770185E-13 -4.346211678547648E-13 5.444568902270324E-10 -1.260993323163403E-9 1.420982135586703E-9 8.408795360723664E-11
i -1.489851100377582E-15 3.255225207003872E-15 -4.035060248567798E-12 -8.565350696931628E-11 8.408795360723664E-11 2.481087088212833E-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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