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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2915130515015572 5.0484e-08  
a 2.566251037865268 9.9956e-09 au
q 1.818155366898126 1.281e-07 au
i 4.512954202666607 4.266e-06 deg
node 196.5953826633051 5.1153e-05 deg
peri 184.9642780115718 5.154e-05 deg
M 206.5717888653053 8.5279e-06 deg
tp 2459840.455616024131
(2022-Sep-17.95561602)
3.6873e-05 TDB
period 1501.57536260677
4.11
8.773e-06
2.402e-08
d
yr
n .2397482064270365 1.4007e-09 deg/d
Q 3.314346708832411 1.2909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      11448 days (31.34 yr)  
   first obs. used      1989-10-09  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53025  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:14:08  

Additional Information
 Earth MOID = .819869 au 
 Jupiter MOID = 2.14619 au 
 T_jup = 3.367 
[ 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 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

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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 22 CATAB v2.0f-lin.ifort 2021-Apr-13 05:14:13 2021-Apr-13 05:14

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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