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180557 (2004 ET34)
Classification: Main-belt Asteroid          SPK-ID: 2180557
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .146820077544825 6.2862e-08  
a 2.518728222378374 1.2252e-08 au
q 2.148928349454442 1.5852e-07 au
i 5.137921856878703 4.5568e-06 deg
node 132.3560613552121 6.8891e-05 deg
peri 36.11358822098843 7.0621e-05 deg
M 79.62862870801052 1.6081e-05 deg
tp 2458877.548634194079
(2020-Jan-29.04863419)
6.4949e-05 TDB
period 1460.058945840362
4.00
1.0654e-05
2.917e-08
d
yr
n .2465653876685066 1.7991e-09 deg/d
Q 2.888528095302306 1.4051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      8848 days (24.22 yr)  
   first obs. used      1996-04-21  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54748  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:26:59  

Additional Information
 Earth MOID = 1.15798 au 
 Jupiter MOID = 2.08446 au 
 T_jup = 3.437 
[ 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 16.78   n/a E2021B55  

180557 (2004 ET34)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ 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
2061-Feb-12 08:03 00:01 Iris 0.0142592686474964 0.0142545587735536 0.014263991145624 7.14261131054429 7.14261125410016 2473867.835586840 1.44962260433711 787.928284460287 107.440497842472 74.4577768025801 19137.8880821294 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:00 2021-Apr-13 21:27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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