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17745 (1998 BG34)
Classification: Main-belt Asteroid          SPK-ID: 2017745
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817146088524654 3.7555e-08  
a 3.13394020424703 1.9794e-08 au
q 2.564457485865266 1.2616e-07 au
i 1.092934631592694 4.2994e-06 deg
node 62.14959502524092 0.00025499 deg
peri 237.4604776380677 0.00025536 deg
M 295.1680413876941 1.5343e-05 deg
tp 2459761.439713673633
(2022-Jun-30.93971367)
8.7176e-05 TDB
period 2026.443435222252
5.55
1.9199e-05
5.256e-08
d
yr
n .1776511467049741 1.6831e-09 deg/d
Q 3.703422922628795 2.3391e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      18312 days (50.14 yr)  
   first obs. used      1971-03-25  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5686  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:54:24  

Additional Information
 Earth MOID = 1.54855 au 
 Jupiter MOID = 1.52455 au 
 T_jup = 3.186 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180467544631396 3.7504e-08  
q 2.569817270945753 1.2573e-07 au
tp 2457731.049625357631
(2016-Dec-08.54962536)
8.5031e-05 TDB
node 62.16623530910006 0.00025476 deg
peri 237.0593031226045 0.00025513 deg
i 1.093467769744702 4.2991e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      18312 days (50.14 yr)  
   first obs. used      1971-03-25  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5686  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:54:24  

Additional Information
 Jupiter MOID = 1.52455 au 
 T_jup = 3.186 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.406514017116435E-15 -4.68483509891811E-15 5.119074459510065E-13 3.179708288293575E-17 1.285001875858297E-13 -1.818448326480243E-17
q -4.68483509891811E-15 1.580742560330862E-14 -1.545270910032395E-12 -4.043008101974539E-15 -4.112969956396426E-13 2.671707003987018E-16
tp 5.119074459510065E-13 -1.545270910032395E-12 7.230276364549838E-9 4.449572545843223E-11 1.203760148555726E-9 -2.616806258451129E-13
node 3.179708288293575E-17 -4.043008101974539E-15 4.449572545843223E-11 6.490268274760553E-8 -6.488370750145614E-8 -3.735777523749214E-10
peri 1.285001875858297E-13 -4.112969956396426E-13 1.203760148555726E-9 -6.488370750145614E-8 6.509148175890482E-8 3.734789649412258E-10
i -1.818448326480243E-17 2.671707003987018E-16 -2.616806258451129E-13 -3.735777523749214E-10 3.734789649412258E-10 1.848196724684183E-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 14.92   n/a E2021B10  
diameter diameter 4.202 km 0.735 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.37 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.100   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17745 (1998 BG34)          Discovered 1998-Jan-22 by Spacewatch at Kitt Peak
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BG34 = 1993 FP59 = 1994 NK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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