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305501 (2008 EM98)
Classification: Main-belt Asteroid          SPK-ID: 2305501
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08256097019629081 1.2058e-07  
a 3.124744387191841 6.3954e-08 au
q 2.866762458969868 4.0785e-07 au
i 21.93333862445835 1.3634e-05 deg
node 347.8112841276415 1.9211e-05 deg
peri 219.03466611 7.2445e-05 deg
M 26.16197922496917 7.6774e-05 deg
tp 2458853.881670346327
(2020-Jan-05.38167035)
0.0004286 TDB
period 2017.530792354818
5.52
6.1939e-05
1.696e-07
d
yr
n .1784359383084388 5.4781e-09 deg/d
Q 3.382726315413814 6.9234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      182  
   data-arc span      5883 days (16.11 yr)  
   first obs. used      2003-03-30  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61406  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Earth MOID = 1.89263 au 
 Jupiter MOID = 1.65201 au 
 T_jup = 3.098 
[ 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 15.3   n/a MPO471208  

305501 (2008 EM98)          Discovered 2008-Mar-03 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ 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
1939-Jul-26 17:55 00:06 Jupiter 1.64351625124071 1.64351494842803 1.64351755406031 6.05894032847967 5.97327494676583 2429471.246409085 6.0007248166069 598.570845584606 61.7878069791447 -88.066645185609 1449088.34586117 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:26 2020-Feb-25 17:55
2011-Jul-18 22:52 < 00:01 Jupiter 1.93017212805913 1.93017085941365 1.93017339670461 5.43597237846464 5.35463634944218 2455761.452867340 0.737483687891139 273.414827389185 59.0275525062721 87.6446053439837 1232380.32186079 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:26 2020-Feb-25 17:55
2022-Jan-04 16:11 < 00:01 Jupiter 1.72022748692595 1.72022632756361 1.72022864629612 6.17249518600335 6.09220133990426 2459584.174403378 0.762118662424024 332.259022225422 45.0703973388203 83.972861529036 1611336.60278583 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:26 2020-Feb-25 17:55
2093-Dec-06 09:20 00:07 Jupiter 1.68717759341653 1.68717387452462 1.68718131234575 5.96291960742408 5.87812383962148 2485852.888887811 6.67311161283971 507.588408525468 100.957738153693 -71.5610890408274 1465110.96396687 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:26 2020-Feb-25 17:55
2176-May-18 23:18 00:13 Jupiter 1.68408281017825 1.68407793074116 1.68408769032211 6.16127579174814 6.07909564527647 2515966.471111796 13.2573799562719 1780.97975032498 43.4125274907496 82.3220922049352 1435646.09075945 T 9 CATAB v2.0f-lin.ifort 2020-Feb-25 17:55:26 2020-Feb-25 17:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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