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227163 (2005 QE18)
Classification: Main-belt Asteroid          SPK-ID: 2227163
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081629656171585 6.8223e-08  
a 2.436683827810518 1.2586e-08 au
q 1.929456495942111 1.7203e-07 au
i 5.282009704302426 7.342e-06 deg
node 155.4996417313325 4.2578e-05 deg
peri 224.2243879433749 4.5905e-05 deg
M 348.7708737019652 1.8358e-05 deg
tp 2459243.835185904836
(2021-Jan-29.33518590)
7.1017e-05 TDB
period 1389.30371888963
3.80
1.0764e-05
2.947e-08
d
yr
n .2591226058818312 2.0076e-09 deg/d
Q 2.943911159678925 1.5206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      7049 days (19.30 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:41  

Additional Information
 Earth MOID = .934166 au 
 Jupiter MOID = 2.52354 au 
 T_jup = 3.468 
[ 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 17.34   n/a E2021B55  

227163 (2005 QE18)          Discovered 2005-Aug-25 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ 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
2159-Aug-08 12:48 00:18 Juno 0.0450876651577414 0.0450170649275588 0.0451583323888882 3.35788638076539 3.35788630040867 2509838.033135300 18.3035709253499 4455.80683634993 77.0281945407199 -37.8951608800398 53722.0859365534 T 11 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:41 2021-Apr-14 00:38
2176-Jul-17 14:03 00:02 Hebe 0.0275588107881753 0.0274663973144344 0.0276516415370052 3.54045982296815 3.54045975925378 2516026.085234482 2.42432580010704 7060.71603512639 67.1506449595283 49.1878319701023 46430.4805043748 T 11 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:41 2021-Apr-14 00:38
2177-Dec-20 10:01 00:14 Hebe 0.00981165948884203 0.00980874156979642 0.00981590218992265 3.12952179979032 3.12952159733132 2516546.917653626 14.2514869754658 6011.17410316392 54.2140835157063 -88.394538088605 27034.1646115483 T 11 CATAB v2.0f-lin.ifort 2021-Apr-14 00:38:41 2021-Apr-14 00:38
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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