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85524 (1997 WZ8)
Classification: Main-belt Asteroid          SPK-ID: 2085524
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07539253201774278 5.9497e-08  
a 2.56833613917339 1.3697e-08 au
q 2.374702774568434 1.5813e-07 au
i 3.492413680841067 3.8677e-06 deg
node 263.8808963849128 9.6028e-05 deg
peri 88.77324341292335 0.00010004 deg
M 256.637753362771 3.0424e-05 deg
tp 2459632.153891608157
(2022-Feb-21.65389161)
0.00012893 TDB
period 1503.405798872856
4.12
1.2027e-05
3.293e-08
d
yr
n .2394563066538001 1.9156e-09 deg/d
Q 2.761969503778346 1.473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      700  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1997-10-30  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:42  

Additional Information
 Earth MOID = 1.37042 au 
 Jupiter MOID = 2.54722 au 
 T_jup = 3.424 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456705.5 (2014-Feb-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07395556273535062 5.9484e-08  
q 2.378648441754941 1.5801e-07 au
tp 2456618.686454922900
(2013-Nov-22.18645492)
0.0001193 TDB
node 264.0653147385844 9.59e-05 deg
peri 87.37032212105146 0.00010006 deg
i 3.494507779037467 3.8716e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      700  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1997-10-30  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:42  

Additional Information
 Jupiter MOID = 2.54722 au 
 T_jup = 3.424 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.538299122882452E-15 -9.372762824190568E-15 -1.993218405245111E-12 6.980578890267371E-14 -4.810059573435017E-13 -1.313389376805041E-15
q -9.372762824190568E-15 2.496738191190552E-14 5.732073471405492E-12 -1.870839815204133E-13 1.383574752107252E-12 3.774827449038998E-15
tp -1.993218405245111E-12 5.732073471405492E-12 1.423281912875956E-8 -5.292809251563272E-11 3.45877363719842E-9 3.953443449899959E-12
node 6.980578890267371E-14 -1.870839815204133E-13 -5.292809251563272E-11 9.196749900501777E-9 -9.190506776700221E-9 5.225803178730121E-11
peri -4.810059573435017E-13 1.383574752107252E-12 3.45877363719842E-9 -9.190506776700221E-9 1.001135008468295E-8 -5.123920799940958E-11
i -1.313389376805041E-15 3.774827449038998E-15 3.953443449899959E-12 5.225803178730121E-11 -5.123920799940958E-11 1.498912712536815E-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 15.62   n/a E2021B10  

85524 (1997 WZ8)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
2048-Jan-16 04:28 < 00:01 David 0.0398337963647667 0.0398266796540065 0.0398409131668553 6.58601849499124 6.58601843740637 2469091.686376936 0.530915554191485 367.370622463963 28.4329597506466 15.0957657668431 56760.9339394887 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:44 2020-Nov-12 21:00
2191-Apr-23 02:03 00:03 Amphi 0.0396335216105748 0.0395993544077574 0.0396676888504238 2.7603136260842 2.76031357353671 2521418.585670557 3.06701235885396 1702.66067011327 33.5347575643525 -1.83257914995838 6629.67007512891 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:44 2020-Nov-12 21:00

Alternate Designations
 1997 WZ8 = 1999 CQ80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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