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5408 The (1232 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2005408
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1392702173797341 1.1273e-08  
a 2.260538398476353 5.8119e-09 au
q 1.945712724325315 2.5335e-08 au
i 4.080412662513341 8.6374e-07 deg
node 207.1641637525782 5.5962e-06 deg
peri 341.593197364209 8.5394e-06 deg
M 221.9342904402194 5.7389e-06 deg
tp 2459676.601542062153
(2022-Apr-07.10154206)
2.0832e-05 TDB
period 1241.412916276381
3.40
4.7875e-06
1.311e-08
d
yr
n .2899921494935145 1.1184e-09 deg/d
Q 2.575364072627391 6.6213e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2726  
   data-arc span      24473 days (67.00 yr)  
   first obs. used      1954-03-06  
   last obs. used      2021-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .444  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:41:38  

Additional Information
 Earth MOID = .946003 au 
 Jupiter MOID = 2.38352 au 
 T_jup = 3.604 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457076.5 (2015-Feb-23.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389767122354166 1.1274e-08  
q 1.947143128723689 2.535e-08 au
tp 2457193.097014134568
(2015-Jun-19.59701413)
1.7017e-05 TDB
node 207.2150576088754 5.5955e-06 deg
peri 341.5472951146314 8.5421e-06 deg
i 4.079871634661231 8.6382e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2726  
   data-arc span      24473 days (67.00 yr)  
   first obs. used      1954-03-06  
   last obs. used      2021-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .444  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:41:38  

Additional Information
 Jupiter MOID = 2.38352 au 
 T_jup = 3.604 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.271038882048319E-16 -2.802065820522833E-16 -4.906373632381613E-14 5.956029895526233E-15 -2.053076648564259E-14 -1.536619871739023E-15
q -2.802065820522833E-16 6.426304076056381E-16 1.250128786243342E-13 -1.42766349129473E-14 5.174207278506129E-14 3.530856031036984E-15
tp -4.906373632381613E-14 1.250128786243342E-13 2.895675820115745E-10 -1.747632098542722E-11 1.120645787101695E-10 -1.089338180392427E-12
node 5.956029895526233E-15 -1.42766349129473E-14 -1.747632098542722E-11 3.130918837223918E-11 -3.62933703888286E-11 7.982817521717241E-13
peri -2.053076648564259E-14 5.174207278506129E-14 1.120645787101695E-10 -3.62933703888286E-11 7.296730860085629E-11 -1.187812801753591E-12
i -1.536619871739023E-15 3.530856031036984E-15 -1.089338180392427E-12 7.982817521717241E-13 -1.187812801753591E-12 7.461781031083627E-13

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 13.76   n/a E2021B10  
diameter diameter 4.233 km 0.569 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 7.374 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 0.352   0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

5408 The (1232 T-1)          Discovered 1971-Mar-25 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1929-Dec-01 10:13 < 00:01 Iris 0.0352253572845523 0.0352214546745613 0.035229260566113 7.34093467416162 7.34093465193025 2425946.925843636 0.283670998516364 315.76891242012 43.1097094254418 52.6535622922694 97684.9012298047 T 39 CATAB v2.0f-lin.ifort 2021-Mar-16 17:42:27 2021-Mar-16 17:42
2026-Nov-26 16:52 < 00:01 Juno 0.0444159631042426 0.0444151049861129 0.0444168212242364 7.41727772076934 7.41727768384079 2461371.202864028 0.183701923299592 79.3451576900059 41.7814656189553 82.1727384577194 157913.780580359 T 39 CATAB v2.0f-lin.ifort 2021-Mar-16 17:42:27 2021-Mar-16 17:42

Alternate Designations
 1232 T-1 = 1954 EL = 1978 JA2 = 1986 UP2 = 1988 GA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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