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215281 (2001 QF121)
Classification: Main-belt Asteroid          SPK-ID: 2215281
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813426244164421 5.0337e-08  
a 2.635155091131999 1.5104e-08 au
q 2.157289151161773 1.3434e-07 au
i 14.13820122096759 5.6325e-06 deg
node 129.1831022775377 1.9219e-05 deg
peri 162.3924131484872 2.3468e-05 deg
M 208.200991454888 1.4376e-05 deg
tp 2459859.331160967389
(2022-Oct-06.83116097)
6.4802e-05 TDB
period 1562.455645932461
4.28
1.3434e-05
3.678e-08
d
yr
n .2304065404590444 1.981e-09 deg/d
Q 3.113021031102224 1.7843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      2001-06-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:57:34  

Additional Information
 Earth MOID = 1.14337 au 
 Jupiter MOID = 2.13516 au 
 T_jup = 3.332 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457462.5 (2016-Mar-15.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825833490874475 5.0219e-08  
q 2.152372972128872 1.3407e-07 au
tp 2456735.668062096541
(2014-Mar-19.16806210)
5.7228e-05 TDB
node 129.2593227702253 1.9212e-05 deg
peri 162.3225868197478 2.3422e-05 deg
i 14.14503519921985 5.6356e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      2001-06-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:57:34  

Additional Information
 Jupiter MOID = 2.13516 au 
 T_jup = 3.332 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.521969952236512E-15 -6.704652780025626E-15 6.389429145105664E-13 6.935572261669841E-15 6.320444852019624E-14 1.025486444976364E-15
q -6.704652780025626E-15 1.79736974413429E-14 -1.649427915722848E-12 -1.979189138011399E-14 -1.40047192336407E-13 -1.96616061962433E-15
tp 6.389429145105664E-13 -1.649427915722848E-12 3.275089759510235E-9 1.11727339762152E-12 7.762975923704016E-10 -6.468526571931028E-12
node 6.935572261669841E-15 -1.979189138011399E-14 1.11727339762152E-12 3.691164286046634E-10 -3.576175689694796E-10 1.388293632574743E-11
peri 6.320444852019624E-14 -1.40047192336407E-13 7.762975923704016E-10 -3.576175689694796E-10 5.485724115626491E-10 -1.488205791027944E-11
i 1.025486444976364E-15 -1.96616061962433E-15 -6.468526571931028E-12 1.388293632574743E-11 -1.488205791027944E-11 3.175982353811786E-11

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 16.3   n/a MPO454546  

215281 (2001 QF121)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ 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
2160-Aug-18 14:44 00:01 David 0.000381026350252687 0.000353834098024164 0.00040841673971374 5.99510701998326 5.9951004064839 2510214.113622659 1.2098147220062 1427.93327042725 85.5591990837808 -17.6802303787476 203.924304846986 T 12 CATAB v2.0f-lin.ifort 2021-Feb-24 19:57:35 2021-Feb-24 19:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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