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26207 (1997 QU)
Classification: Main-belt Asteroid          SPK-ID: 2026207
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2915130526174629 5.1084e-08  
a 2.566251034810299 1.008e-08 au
q 1.818155361870026 1.2953e-07 au
i 4.51295409220804 4.3003e-06 deg
node 196.5953872719612 5.1592e-05 deg
peri 184.9642742556611 5.1981e-05 deg
M 206.5717885941773 8.5851e-06 deg
tp 2459840.455616012274
(2022-Sep-17.95561601)
3.7144e-05 TDB
period 1501.575359925466
4.11
8.8471e-06
2.422e-08
d
yr
n .2397482068551453 1.4126e-09 deg/d
Q 3.314346707750573 1.3018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      11173 days (30.59 yr)  
   first obs. used      1989-10-09  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53441  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:14:40  

Additional Information
 Earth MOID = .819869 au 
 Jupiter MOID = 2.14619 au 
 T_jup = 3.367 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2882661676970337 5.0698e-08  
q 1.82877970288221 1.2815e-07 au
tp 2456833.005316976196
(2014-Jun-24.50531698)
3.4841e-05 TDB
node 196.7073702822088 5.1832e-05 deg
peri 184.6474237100455 5.2231e-05 deg
i 4.495413902515961 4.289e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      11173 days (30.59 yr)  
   first obs. used      1989-10-09  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53441  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:14:40  

Additional Information
 Jupiter MOID = 2.14619 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.570250886207398E-15 -6.487331553775418E-15 7.94176731260412E-13 2.199009971891458E-14 5.010810831143048E-14 -3.324476759834082E-15
q -6.487331553775418E-15 1.642318083231958E-14 -2.055343007039947E-12 -5.471216847304772E-14 -1.360245185824581E-13 8.5459199854806E-15
tp 7.94176731260412E-13 -2.055343007039947E-12 1.213913224085441E-9 1.31314776246877E-11 2.324552179192799E-10 -2.8435056456848E-12
node 2.199009971891458E-14 -5.471216847304772E-14 1.31314776246877E-11 2.686604031329674E-9 -2.676050081432525E-9 1.902672987741413E-11
peri 5.010810831143048E-14 -1.360245185824581E-13 2.324552179192799E-10 -2.676050081432525E-9 2.728065545269001E-9 -1.951913260668547E-11
i -3.324476759834082E-15 8.5459199854806E-15 -2.8435056456848E-12 1.902672987741413E-11 -1.951913260668547E-11 1.839536102972467E-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 14.86   n/a E2021B10  
rotation period rot_per 9.17438 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

26207 (1997 QU)          Discovered 1997-Aug-25 by Williams, K. A. at Lake Clear
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ 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-Aug-01 19:01 < 00:01 Hygie 0.0440321367039129 0.0440103872117481 0.044053886595222 6.53575002575038 6.53574989149329 2416694.292434266 0.754451826513079 1103.95577148375 55.2984207522775 -10.9508058569324 23355.5543783613 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 19:14:43 2021-Feb-24 19:14

Alternate Designations
 1997 QU = 1989 TR1 = 1989 UM8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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