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79104 (1981 EK33)
Classification: Main-belt Asteroid          SPK-ID: 2079104
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04022608923991298 5.0409e-08  
a 2.777089673488595 2.0122e-08 au
q 2.665378216455602 1.3455e-07 au
i 5.13107413992152 4.3802e-06 deg
node 292.226406114644 7.3834e-05 deg
peri 355.86124845 0.00011383 deg
M 103.0962299299477 8.7904e-05 deg
tp 2458716.412837759702
(2019-Aug-20.91283776)
0.00041193 TDB
period 1690.375860736343
4.63
1.8372e-05
5.03e-08
d
yr
n .2129703862685194 2.3147e-09 deg/d
Q 2.888801130521588 2.0932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      14556 days (39.85 yr)  
   first obs. used      1981-03-01  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:40:11  

Additional Information
 Earth MOID = 1.64711 au 
 Jupiter MOID = 2.19726 au 
 T_jup = 3.328 
[ 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 15.71   n/a MPCxxxxx  

79104 (1981 EK33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ 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
1907-Sep-15 19:20 00:15 Amphi 0.028215038019802 0.0281937325117064 0.0282363539188018 2.29645573637763 2.29645564765502 2417834.305616997 14.9276520465964 1362.01809618447 52.5076758475142 38.8511484435075 50404.7003128496 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 13:40:13 2021-Apr-13 13:40
2166-Sep-20 01:13 00:20 Iris 0.0454041094314602 0.0453658735101804 0.0454423453615952 3.53174913855708 3.53174910270718 2512437.550388344 19.9425554028669 1905.14946593851 70.1753337457797 -0.182471750897092 3575.94535787425 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 13:40:13 2021-Apr-13 13:40

Alternate Designations
 1981 EK33 = 2001 SA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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