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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634705345489517 6.0401e-08  
a 2.396245318301632 1.5026e-08 au
q 2.004529815208441 1.4713e-07 au
i 10.7476424763728 6.9003e-06 deg
node 278.7236182159557 2.5327e-05 deg
peri 354.5504890372466 3.0726e-05 deg
M 181.5609661396257 2.0989e-05 deg
tp 2459272.056729325353
(2021-Feb-26.55672933)
8.2322e-05 TDB
period 1354.862875722028
3.71
1.2743e-05
3.489e-08
d
yr
n .2657095462949712 2.4992e-09 deg/d
Q 2.787960821394822 1.7482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55466  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:37:47  

Additional Information
 Earth MOID = .987937 au 
 Jupiter MOID = 2.33674 au 
 T_jup = 3.487 
[ 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 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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