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90500 (2004 EG4)
Classification: Main-belt Asteroid          SPK-ID: 2090500
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1075330735195772 4.3184e-08  
a 3.076847541757936 2.6546e-08 au
q 2.745984668841549 1.3558e-07 au
i 15.30328111064741 5.0726e-06 deg
node 53.39014466930835 1.8828e-05 deg
peri 192.3829469633007 3.0831e-05 deg
M 301.0931463869478 2.5625e-05 deg
tp 2459323.067581966105
(2021-Apr-18.56758197)
0.00014113 TDB
period 1971.321202632824
5.40
2.5512e-05
6.985e-08
d
yr
n .1826186415076332 2.3633e-09 deg/d
Q 3.407710414674322 2.94e-08 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      13506 days (36.98 yr)  
   first obs. used      1983-05-08  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47251  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:32:20  

Additional Information
 Earth MOID = 1.73511 au 
 Jupiter MOID = 1.60874 au 
 T_jup = 3.166 
[ 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 14.2   n/a MPO337934  
diameter diameter 5.844 km 0.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.156   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90500 (2004 EG4)          Discovered 2004-Mar-11 by NEAT at Palomar
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
1904-Dec-06 21:33 00:04 Jupiter 1.65729902928855 1.65729718753297 1.65730087104441 3.89875746640525 3.76538677424384 2416821.398045635 4.08825160393395 244.608424690008 94.4517532972836 -86.6445498872492 2577001.30329547 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
1954-May-03 20:26 00:02 Jupiter 1.9653445192925 1.96534254507728 1.96534649352136 3.58235383486848 3.45995674722589 2434866.351384164 2.48985596158533 284.507602604552 11.3079347637775 -68.9558274557494 3192052.62837927 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
1964-Feb-19 08:21 00:02 Jupiter 1.68534574686068 1.68534465507154 1.68534683865471 3.88899295871264 3.75753968865051 2438444.848091267 1.92485122290247 299.157678523865 46.3776215965792 -84.0064593071442 2600799.60039339 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2013-Jul-06 12:04 < 00:01 Jupiter 1.90909133245562 1.90909073272377 1.90909193218833 3.60185929206607 3.47649732278069 2456480.003005703 0.285157791799372 83.9011815060437 11.6917934225741 -71.6270080332182 3027446.77231461 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2023-Apr-24 12:19 < 00:01 Jupiter 1.72542700682943 1.72542638371525 1.72542762995224 3.87292270839822 3.74402433918057 2460059.013447345 0.444524678618999 363.500577674138 23.1308573446662 -86.7747777564107 2724321.11897825 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2072-Sep-01 13:25 00:02 Jupiter 1.84820708065739 1.84820537900349 1.84820878233494 3.64389475720763 3.51587552068914 2478087.058747537 2.32573324963576 353.659720363088 12.2483029693921 -75.5891195273567 2896257.23960625 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2082-Jun-20 19:36 00:03 Jupiter 1.77643080012223 1.7764289542026 1.77643264614578 3.85419896401688 3.72843489788997 2481666.316875121 2.71155492963092 798.244349790993 42.9376592920196 -83.899419911341 2418268.04884658 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2131-Oct-28 17:17 00:04 Jupiter 1.7894187515519 1.78941579866273 1.78942170455326 3.69649411043935 3.56614181202112 2499692.220381962 4.41932414958773 740.534757490909 13.2494506430762 -77.9309499602905 2807228.65302078 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2141-Aug-15 13:21 00:05 Jupiter 1.83386045377353 1.83385705447866 1.833863853769 3.84095113157127 3.71875605973512 2503271.056422009 4.89810032055517 1880.67721768661 37.9115326943735 -84.7937520290983 2405801.60091375 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2190-Dec-26 01:11 00:06 Jupiter 1.73893788564765 1.73893418186709 1.73894158968846 3.74690344204792 3.61456797603295 2521300.549250126 6.1039054422781 1102.47935424295 14.1190539127782 -79.8234211249426 2754123.06493795 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32
2200-Oct-13 00:23 00:07 Jupiter 1.89113785661387 1.89113305890618 1.89114265563465 3.84402076615975 3.72568313527696 2524878.516104061 6.74194849048364 2567.1526467821 34.1728014995093 -84.5696508434087 2486687.54615198 T 21 CATAB v2.0f-lin.ifort 2020-May-20 16:32:36 2020-May-20 16:32

Alternate Designations
 2004 EG4 = 1983 JT1 = 1999 JV125 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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