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JPL Small-Body Database Browser
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173138 (1995 QZ4)
Classification: Main-belt Asteroid          SPK-ID: 2173138
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1926526108584422 4.965e-08  
a 2.293529466132036 9.0698e-09 au
q 1.85167502640093 1.1561e-07 au
i 5.713637634223629 5.7449e-06 deg
node 288.0470881476928 5.3745e-05 deg
peri 329.9168824311024 5.6229e-05 deg
M 342.4143356150564 1.4457e-05 deg
tp 2458662.474237600041
(2019-Jun-27.97423760)
5.0972e-05 TDB
period 1268.68823648861
3.47
7.5256e-06
2.06e-08
d
yr
n .2837576558575051 1.6832e-09 deg/d
Q 2.735383905863142 1.0817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      8842 days (24.21 yr)  
   first obs. used      1995-06-05  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64557  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:58  

Additional Information
 Earth MOID = .838659 au 
 Jupiter MOID = 2.34341 au 
 T_jup = 3.565 
[ 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 16.8   n/a MPO433112  

173138 (1995 QZ4)          Discovered 1995-Aug-22 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ 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
2008-Jan-06 02:34 < 00:01 Hebe 0.0366972255795506 0.0366943746718731 0.0367000764891528 8.92668034607058 8.92668032709328 2454471.607257771 0.349732528259061 142.926087341907 65.4860636058775 6.74605022970652 39389.3077628211 T 11 CATAB v2.0f-lin.ifort 2019-Sep-24 03:46:00 2019-Sep-24 03:46
2104-Dec-25 03:26 00:01 David 0.0309024050751899 0.0308921098453806 0.0309127037016098 8.00279148053064 8.00279141944357 2489888.643382098 1.05421455590838 725.526573881053 44.3118371490543 45.0698692099025 73977.7149053254 T 11 CATAB v2.0f-lin.ifort 2019-Sep-24 03:46:00 2019-Sep-24 03:46

Alternate Designations
 1995 QZ4 = 2002 QZ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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