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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04539818457816445 3.0283e-08  
a 2.305954432582992 7.5443e-09 au
q 2.201268287623753 6.8594e-08 au
i 5.967059360744876 3.1823e-06 deg
node 274.0194208761634 3.7453e-05 deg
peri 216.0236177949601 5.8929e-05 deg
M 141.2828656984806 4.4593e-05 deg
tp 2458698.548792886291
(2019-Aug-03.04879289)
0.00015826 TDB
period 1279.011673974551
3.50
6.2767e-06
1.718e-08
d
yr
n .2814673292865996 1.3813e-09 deg/d
Q 2.410640577542231 7.8868e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1760  
   data-arc span      12345 days (33.80 yr)  
   first obs. used      1986-10-02  
   last obs. used      2020-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:41  

Additional Information
 Earth MOID = 1.21942 au 
 Jupiter MOID = 2.62106 au 
 T_jup = 3.579 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456969.5 (2014-Nov-08.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04552028919182789 3.0438e-08  
q 2.200667254154184 6.9055e-08 au
tp 2457421.800094714067
(2016-Feb-03.30009471)
0.00015691 TDB
node 274.086389308097 3.745e-05 deg
peri 216.4772742672079 5.8666e-05 deg
i 5.96754959473707 3.1823e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1760  
   data-arc span      12345 days (33.80 yr)  
   first obs. used      1986-10-02  
   last obs. used      2020-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:41  

Additional Information
 Jupiter MOID = 2.62106 au 
 T_jup = 3.579 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.264944572675956E-16 -2.09072120979965E-15 1.012687235978702E-12 -2.713421727936305E-16 2.924843791532798E-13 -2.337544412242779E-16
q -2.09072120979965E-15 4.768556935312738E-15 -2.337722527848737E-12 1.106921511290278E-15 -6.800790113251074E-13 5.985893926640261E-16
tp 1.012687235978702E-12 -2.337722527848737E-12 2.461972650746947E-8 -2.935642854636478E-11 7.101448606332543E-9 -5.539736194061631E-13
node -2.713421727936305E-16 1.106921511290278E-15 -2.935642854636478E-11 1.402508576246508E-9 -1.402943303998307E-9 -8.845495964889193E-12
peri 2.924843791532798E-13 -6.800790113251074E-13 7.101448606332543E-9 -1.402943303998307E-9 3.441726773928758E-9 8.612975939327068E-12
i -2.337544412242779E-16 5.985893926640261E-16 -5.539736194061631E-13 -8.845495964889193E-12 8.612975939327068E-12 1.012717504983622E-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 14.63   n/a E2021B10  
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. 2020-October); 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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