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JPL Small-Body Database Browser
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172851 (2005 EF28)
Classification: Main-belt Asteroid          SPK-ID: 2172851
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1030443706960221 6.0398e-08  
a 2.309298795373453 1.5552e-08 au
q 2.071338554255113 1.4268e-07 au
i 3.43854621542636 6.0243e-06 deg
node 31.71610140815595 9.6487e-05 deg
peri 189.3937773533465 0.00010237 deg
M 82.27933585243896 3.819e-05 deg
tp 2458707.540964534816
(2019-Aug-12.04096453)
0.00013489 TDB
period 1281.795139384808
3.51
1.2948e-05
3.545e-08
d
yr
n .2808561126021905 2.8372e-09 deg/d
Q 2.547259036491792 1.7155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7710 days (21.11 yr)  
   first obs. used      1998-03-02  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60873  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 02:48:13  

Additional Information
 Earth MOID = 1.06311 au 
 Jupiter MOID = 2.42363 au 
 T_jup = 3.576 
[ 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 16.9   n/a MPO433109  

172851 (2005 EF28)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ 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
1940-Mar-23 09:48 00:06 Psych 0.0343501299689441 0.0343396911751512 0.0343605711519088 3.25038515976771 3.25038505140248 2429711.908256110 5.63892197666369 690.054222319408 53.3803801163504 -41.2509041974836 63631.6380421225 T 11 CATAB v2.0e-lin.ifort 2019-Jul-14 02:48:29 2019-Jul-14 02:48
2046-Aug-13 12:23 < 00:01 Eunom 0.0378922715440081 0.0378875206987018 0.0378970237607303 6.78040830485582 6.78040825021875 2468571.016306066 0.562048384886718 449.787256526389 80.936994651697 -59.7927291572645 60834.8500607435 T 11 CATAB v2.0e-lin.ifort 2019-Jul-14 02:48:29 2019-Jul-14 02:48
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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