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17409 (1988 BA4)
Classification: Main-belt Asteroid          SPK-ID: 2017409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04559591953142708 3.805e-08  
a 2.305291199604707 8.547e-09 au
q 2.200179327571024 8.9085e-08 au
i 5.967713436740747 3.5695e-06 deg
node 274.0181557090294 3.969e-05 deg
peri 215.7185451417086 6.0886e-05 deg
M 85.2766894052339 4.4915e-05 deg
tp 2458697.658808244919
(2019-Aug-02.15880824)
0.00015954 TDB
period 1278.459914335485
3.50
7.1099e-06
1.947e-08
d
yr
n .2815888053769132 1.566e-09 deg/d
Q 2.41040307163839 8.9367e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1497  
   data-arc span      12177 days (33.34 yr)  
   first obs. used      1986-10-02  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:03:52  

Additional Information
 Earth MOID = 1.21841 au 
 Jupiter MOID = 2.62267 au 
 T_jup = 3.580 
[ 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 14.6   n/a MPO358799  
diameter diameter 2.509 km 0.493 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.849 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.535   0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17409 (1988 BA4)          Discovered 1988-Jan-19 by Debehogne, H. at La Silla
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1988 BA4 = 1986 TN8 = 2000 QF89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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