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39841 (1998 BU24)
Classification: Main-belt Asteroid          SPK-ID: 2039841
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1565853444272154 3.5677e-08  
a 2.45318697152402 1.0143e-08 au
q 2.069053844643574 8.9817e-08 au
i 3.387613565302775 3.9354e-06 deg
node 65.4034851973755 6.6015e-05 deg
peri 30.51580110853079 6.7299e-05 deg
M 324.2443514130071 1.5217e-05 deg
tp 2459139.891586387281
(2020-Oct-17.39158639)
5.9784e-05 TDB
period 1403.441780040196
3.84
8.7044e-06
2.383e-08
d
yr
n .2565122437709451 1.5909e-09 deg/d
Q 2.837320098404466 1.1732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9446 days (25.86 yr)  
   first obs. used      1993-12-16  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57499  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:49:17  

Additional Information
 Earth MOID = 1.08667 au 
 Jupiter MOID = 2.3305 au 
 T_jup = 3.475 
[ 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 15.5   n/a MPO449243  
diameter diameter 2.127 km 0.359 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39841 (1998 BU24)          Discovered 1998-Jan-28 by Kobayashi, T. at Oizumi
Reference: 20020526/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
2145-Jul-20 05:06 00:09 Hygie 0.0355730482675339 0.0355625374311669 0.0355835606134967 3.28663270851217 3.28663237804357 2504705.712635548 8.56305713576058 637.968280933193 37.0370708273186 -35.0216181174048 82518.8016855565 T 17 CATAB v2.0f-lin.ifort 2019-Nov-07 05:49:22 2019-Nov-07 05:49

Alternate Designations
 1998 BU24 = 2000 QG99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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