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JPL Small-Body Database Browser
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74987 (1999 TZ253)
Classification: Main-belt Asteroid          SPK-ID: 2074987
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1636052929606349 5.5949e-08  
a 2.395604620987885 1.4132e-08 au
q 2.003671025153311 1.3825e-07 au
i 10.74799068298358 6.2758e-06 deg
node 278.7243365056302 2.49e-05 deg
peri 354.6500063807324 3.027e-05 deg
M 287.7532826076554 2.0684e-05 deg
tp 2459272.292055768846
(2021-Feb-26.79205577)
7.9015e-05 TDB
period 1354.319526317362
3.71
1.1984e-05
3.281e-08
d
yr
n .2658161482607466 2.3522e-09 deg/d
Q 2.787538216822458 1.6445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      7452 days (20.40 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:19  

Additional Information
 Earth MOID = .987569 au 
 Jupiter MOID = 2.33839 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457021.5 (2014-Dec-30.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1643297963911667 5.593e-08  
q 2.001612601312267 1.3829e-07 au
tp 2456562.761668346978
(2013-Sep-27.26166835)
6.964e-05 TDB
node 278.7980158254416 2.4885e-05 deg
peri 354.4673956617578 3.0228e-05 deg
i 10.75199086048952 6.2786e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      7452 days (20.40 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55285  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:19  

Additional Information
 Jupiter MOID = 2.33839 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.128131188519549E-15 -7.70907528831301E-15 5.590494050588067E-13 -2.101387106753169E-14 2.006543173067197E-13 2.257697919591972E-15
q -7.70907528831301E-15 1.91227648508989E-14 -1.151014367056966E-12 5.088025039984099E-14 -4.337104220374134E-13 -5.018561787460651E-15
tp 5.590494050588067E-13 -1.151014367056966E-12 4.849753272684119E-9 -3.782507298246466E-11 1.21224889529383E-9 -1.803294803916924E-12
node -2.101387106753169E-14 5.088025039984099E-14 -3.782507298246466E-11 6.192723371353445E-10 -6.170118488269406E-10 4.698617562438182E-11
peri 2.006543173067197E-13 -4.337104220374134E-13 1.21224889529383E-9 -6.170118488269406E-10 9.137126307902236E-10 -4.649669246246775E-11
i 2.257697919591972E-15 -5.018561787460651E-15 -1.803294803916924E-12 4.698617562438182E-11 -4.649669246246775E-11 3.942062308428316E-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 15.3   n/a MPO366108  
diameter diameter 3.702 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74987 (1999 TZ253)          Discovered 1999-Oct-11 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TZ253 = 2000 YG58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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