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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .206186674410333 4.8764e-08  
a 2.305777159130159 5.4555e-09 au
q 1.830356634757806 1.1269e-07 au
i 5.727832239928433 4.3979e-06 deg
node 178.5531184990581 3.0364e-05 deg
peri 192.9698921258159 3.1416e-05 deg
M 56.75888114300303 7.4668e-06 deg
tp 2458798.869720969767
(2019-Nov-11.36972097)
2.6415e-05 TDB
period 1278.864188108334
3.50
4.5387e-06
1.243e-08
d
yr
n .281499789694247 9.9904e-10 deg/d
Q 2.781197683502512 6.5803e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      15471 days (42.36 yr)  
   first obs. used      1977-09-18  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50379  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:41:22  

Additional Information
 Earth MOID = .830649 au 
 Jupiter MOID = 2.68172 au 
 T_jup = 3.553 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457026.5 (2015-Jan-04.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20758443039384 4.8939e-08  
q 1.826341799111792 1.1323e-07 au
tp 2457519.350751556572
(2016-May-10.85075156)
2.5687e-05 TDB
node 178.625980886392 3.0321e-05 deg
peri 192.7626318767205 3.135e-05 deg
i 5.732580077490872 4.4028e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      15471 days (42.36 yr)  
   first obs. used      1977-09-18  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50379  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:41:22  

Additional Information
 Jupiter MOID = 2.68172 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.394992957208477E-15 -5.537168112050007E-15 -3.292108691962845E-13 2.782908443478247E-15 -8.522036884833222E-15 -2.050977706589632E-15
q -5.537168112050007E-15 1.282040149217714E-14 7.574717119760911E-13 -6.674962469311336E-15 1.625634478371778E-14 4.820383289511197E-15
tp -3.292108691962845E-13 7.574717119760911E-13 6.598308225402066E-10 -4.305323178716938E-12 2.049880208524375E-10 1.57181293312074E-12
node 2.782908443478247E-15 -6.674962469311336E-15 -4.305323178716938E-12 9.193368911804789E-10 -9.149392225858857E-10 -1.107781658568411E-12
peri -8.522036884833222E-15 1.625634478371778E-14 2.049880208524375E-10 -9.149392225858857E-10 9.828381316422563E-10 1.485649851067963E-12
i -2.050977706589632E-15 4.820383289511197E-15 1.57181293312074E-12 -1.107781658568411E-12 1.485649851067963E-12 1.938461823263275E-11

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. 2019-August); 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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