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85281 (1994 PZ16)
Classification: Main-belt Asteroid          SPK-ID: 2085281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1950832728005336 3.7047e-08  
a 2.283451093541025 7.9974e-09 au
q 1.837987980933084 8.5333e-08 au
i 6.220082099872471 4.8799e-06 deg
node 166.5232399685798 3.8575e-05 deg
peri 130.9449174424715 4.0994e-05 deg
M 194.9076372401605 1.1691e-05 deg
tp 2459578.476899327636
(2021-Dec-29.97689933)
4.0855e-05 TDB
period 1260.335004476445
3.45
6.6212e-06
1.813e-08
d
yr
n .2856383411722722 1.5006e-09 deg/d
Q 2.728914206148966 9.5576e-09 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      9303 days (25.47 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58981  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:29:23  

Additional Information
 Earth MOID = .829657 au 
 Jupiter MOID = 2.50518 au 
 T_jup = 3.571 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456611.5 (2013-Nov-15.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953853784340847 3.7028e-08  
q 1.836768499760922 8.529e-08 au
tp 2457058.581495320048
(2015-Feb-05.08149532)
4.2699e-05 TDB
node 166.5596860399253 3.856e-05 deg
peri 131.0380157107033 4.0976e-05 deg
i 6.221451473337166 4.8818e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      9303 days (25.47 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58981  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:29:23  

Additional Information
 Jupiter MOID = 2.50518 au 
 T_jup = 3.571 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.371048652161694E-15 -3.149126531678848E-15 2.895363997302836E-13 -3.67590762716086E-14 1.286662014211564E-13 -6.442683373353891E-15
q -3.149126531678848E-15 7.274464853674171E-15 -7.472081882984608E-13 8.441258941485925E-14 -3.253779461506137E-13 1.483125996652518E-14
tp 2.895363997302836E-13 -7.472081882984608E-13 1.823205220220405E-9 -1.33933321029449E-11 6.066102293718201E-10 -3.305284655928765E-12
node -3.67590762716086E-14 8.441258941485925E-14 -1.33933321029449E-11 1.48684220238879E-9 -1.480987893491228E-9 2.113925282097915E-11
peri 1.286662014211564E-13 -3.253779461506137E-13 6.066102293718201E-10 -1.480987893491228E-9 1.679053562477611E-9 -2.195164778404959E-11
i -6.442683373353891E-15 1.483125996652518E-14 -3.305284655928765E-12 2.113925282097915E-11 -2.195164778404959E-11 2.383211309594332E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO453283  

85281 (1994 PZ16)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1994 PZ16 = 1994 RE18 = 2000 DZ66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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