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JPL Small-Body Database Browser
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11902 (1991 PZ12)
Classification: Main-belt Asteroid          SPK-ID: 2011902
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320464305905885 4.667e-08  
a 2.431671144716642 1.0448e-08 au
q 2.110577649686679 1.1158e-07 au
i 5.552232854580353 4.4071e-06 deg
node 322.0189316523966 4.3994e-05 deg
peri 80.92375445251756 4.96e-05 deg
M 153.7249311652187 1.8872e-05 deg
tp 2458409.077973178311
(2018-Oct-17.57797318)
7.3603e-05 TDB
period 1385.01886481235
3.79
8.9267e-06
2.444e-08
d
yr
n .2599242574567927 1.6753e-09 deg/d
Q 2.752764639746605 1.1828e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1464  
   data-arc span      12828 days (35.12 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:38:09  

Additional Information
 Earth MOID = 1.12753 au 
 Jupiter MOID = 2.63711 au 
 T_jup = 3.489 
[ 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 14.5   n/a MPO467803  
diameter diameter 3.504 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11902 (1991 PZ12)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ 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
2165-Feb-19 17:28 00:08 Amphi 0.0322997115806128 0.0322780542111075 0.0323213692453332 1.44299887109055 1.44299874774928 2511860.227803960 8.34006484594146 1088.2387267937 47.166915741247 8.37203947711045 15486.9568433087 T 26 CATAB v2.0f-lin.ifort 2020-Jan-28 22:38:29 2020-Jan-28 22:38

Alternate Designations
 1991 PZ12 = 1984 WH1 = 1984 YF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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