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26241 (1998 QY40)
Classification: Main-belt Asteroid          SPK-ID: 2026241
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2062884235355608 4.6069e-08  
a 2.305923349606399 5.4067e-09 au
q 1.830238057022256 1.063e-07 au
i 5.728167206362367 4.3179e-06 deg
node 178.5466925528582 2.9646e-05 deg
peri 192.9892116977783 3.0647e-05 deg
M 113.0302413603148 7.46e-06 deg
tp 2458798.933124448939
(2019-Nov-11.43312445)
2.6241e-05 TDB
period 1278.985813518209
3.50
4.4982e-06
1.232e-08
d
yr
n .2814730204158551 9.8995e-10 deg/d
Q 2.781608642190543 6.522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1468  
   data-arc span      15828 days (43.33 yr)  
   first obs. used      1977-09-18  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50312  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:18:23  

Additional Information
 Earth MOID = .829045 au 
 Jupiter MOID = 2.6824 au 
 T_jup = 3.553 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO502353  
diameter diameter 2.730 km 0.579 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.835 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.313   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26241 (1998 QY40)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QY40 = 1977 SG = 1991 RP33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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