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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320464246979533 4.6329e-08  
a 2.431671141167141 9.8882e-09 au
q 2.110577660934828 1.1106e-07 au
i 5.552232710287775 4.3823e-06 deg
node 322.0189342678026 4.3056e-05 deg
peri 80.92376212078568 4.7801e-05 deg
M 153.7249239981043 1.7619e-05 deg
tp 2458409.078002047114
(2018-Oct-17.57800205)
6.8373e-05 TDB
period 1385.01886177979
3.79
8.4481e-06
2.313e-08
d
yr
n .2599242580259084 1.5854e-09 deg/d
Q 2.752764621399455 1.1194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      12859 days (35.21 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:11:36  

Additional Information
 Earth MOID = 1.12753 au 
 Jupiter MOID = 2.63711 au 
 T_jup = 3.489 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456685.5 (2014-Jan-28.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306167507524967 4.6132e-08  
q 2.115006124181392 1.1045e-07 au
tp 2457022.506974089327
(2014-Dec-31.00697409)
7.1928e-05 TDB
node 322.0886531676593 4.298e-05 deg
peri 80.73311626530185 4.7878e-05 deg
i 5.556622679124992 4.3837e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      12859 days (35.21 yr)  
   first obs. used      1984-11-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:11:36  

Additional Information
 Jupiter MOID = 2.63711 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.128199061474338E-15 -5.080848754852646E-15 -1.726435316253648E-12 -1.028113485852625E-14 -5.412237404587419E-13 -5.275098874844139E-15
q -5.080848754852646E-15 1.220020622594554E-14 4.006714499973815E-12 2.555928615490852E-14 1.254152852969769E-12 1.277780383311514E-14
tp -1.726435316253648E-12 4.006714499973815E-12 5.173571234510679E-9 3.737072254708285E-12 1.532090987283443E-9 2.967795506329208E-12
node -1.028113485852625E-14 2.555928615490852E-14 3.737072254708285E-12 1.847254018979139E-9 -1.83684970511738E-9 6.119248543113609E-11
peri -5.412237404587419E-13 1.254152852969769E-12 1.532090987283443E-9 -1.83684970511738E-9 2.292311080069452E-9 -5.989946070274241E-11
i -5.275098874844139E-15 1.277780383311514E-14 2.967795506329208E-12 6.119248543113609E-11 -5.989946070274241E-11 1.921720296176456E-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 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

[ show close-approach data ]
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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