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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061084073542295 4.9823e-08  
a 2.305760500085639 5.5614e-09 au
q 1.830523875672696 1.1523e-07 au
i 5.727791446146536 4.4624e-06 deg
node 178.5598045119722 3.0818e-05 deg
peri 192.9075884365137 3.1868e-05 deg
M 304.1957591658679 7.6168e-06 deg
tp 2458798.736865911948
(2019-Nov-11.23686591)
2.7173e-05 TDB
period 1278.850328605338
3.50
4.6268e-06
1.267e-08
d
yr
n .2815028404399766 1.0185e-09 deg/d
Q 2.780997124498581 6.7077e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      15413 days (42.20 yr)  
   first obs. used      1977-09-18  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:26:16  

Additional Information
 Earth MOID = .829967 au 
 Jupiter MOID = 2.67857 au 
 T_jup = 3.553 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456912.5 (2014-Sep-12.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .207587890967495 4.999e-08  
q 1.826295866640378 1.1578e-07 au
tp 2457519.407411783376
(2016-May-10.90741178)
2.6294e-05 TDB
node 178.6263324580805 3.0774e-05 deg
peri 192.776635797165 3.1801e-05 deg
i 5.732639559797233 4.4675e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      15413 days (42.20 yr)  
   first obs. used      1977-09-18  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:26:16  

Additional Information
 Jupiter MOID = 2.67857 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.498973012844983E-15 -5.783783012842215E-15 -3.842985884950257E-13 -1.158839566288673E-15 -1.333363240051892E-14 -1.612659799506546E-15
q -5.783783012842215E-15 1.340536399139013E-14 8.879936009099042E-13 2.433597026104511E-15 2.778107674625856E-14 3.811996533627211E-15
tp -3.842985884950257E-13 8.879936009099042E-13 6.913624372508904E-10 -4.015836385584605E-12 2.09852936500001E-10 1.587788581284322E-12
node -1.158839566288673E-15 2.433597026104511E-15 -4.015836385584605E-12 9.470382530838728E-10 -9.425787009489311E-10 -4.760230885082753E-12
peri -1.333363240051892E-14 2.778107674625856E-14 2.09852936500001E-10 -9.425787009489311E-10 1.011287921124999E-9 5.140491933055562E-12
i -1.612659799506546E-15 3.811996533627211E-15 1.587788581284322E-12 -4.760230885082753E-12 5.140491933055562E-12 1.995840395966344E-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 14.8   n/a MPO435946  
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-January); 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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