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JPL Small-Body Database Browser
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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2110-Nov-13 05:06 00:03 David 0.00571751486253064 0.00570645620131447 0.00572857416865555 5.63599598147689 5.63599551265804 2492037.712622832 3.05571056680766 559.489923605713 22.5636283930558 -9.86714927917848 6658.3461431468 T 27 CATAB v2.0f-lin.ifort 2020-Feb-23 09:15:44 2020-Feb-23 09:15
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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