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15990 (1998 YT1)
Classification: Main-belt Asteroid          SPK-ID: 2015990
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2146304203797209 2.7539e-08  
a 2.354065104931808 5.3062e-09 au
q 1.848811121859062 6.6108e-08 au
i 1.996154851760495 3.4273e-06 deg
node 173.0452482069242 7.6406e-05 deg
peri 235.48187675 7.6805e-05 deg
M 95.27315855674053 7.1745e-06 deg
tp 2458851.364351999092
(2020-Jan-02.86435200)
2.6e-05 TDB
period 1319.247049057078
3.61
4.4605e-06
1.221e-08
d
yr
n .2728829298934626 9.2265e-10 deg/d
Q 2.859319088004553 6.4451e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1821  
   data-arc span      11171 days (30.58 yr)  
   first obs. used      1990-08-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:10:56  

Additional Information
 Earth MOID = .85888 au 
 Jupiter MOID = 2.52741 au 
 T_jup = 3.523 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457048.5 (2015-Jan-26.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2143355410306202 2.7605e-08  
q 1.849535814403235 6.625e-08 au
tp 2457529.356293082250
(2016-May-20.85629308)
2.542e-05 TDB
node 173.1057406356432 7.6336e-05 deg
peri 234.93304442282 7.6737e-05 deg
i 1.99590758922139 3.4311e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1821  
   data-arc span      11171 days (30.58 yr)  
   first obs. used      1990-08-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:10:56  

Additional Information
 Jupiter MOID = 2.52741 au 
 T_jup = 3.523 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.620520682914431E-16 -1.825555051444313E-15 -2.358085529071342E-13 8.50472977004524E-15 -7.070069869657519E-14 -4.54343493878074E-16
q -1.825555051444313E-15 4.38907758716251E-15 5.647922803464585E-13 -2.034177726965537E-14 1.676012981052594E-13 1.134945682486922E-15
tp -2.358085529071342E-13 5.647922803464585E-13 6.461695987795557E-10 -8.023279595636383E-12 2.043107812382076E-10 2.47946474907516E-13
node 8.50472977004524E-15 -2.034177726965537E-14 -8.023279595636383E-12 5.827134488322628E-9 -5.825553750500152E-9 3.557415414506385E-11
peri -7.070069869657519E-14 1.676012981052594E-13 2.043107812382076E-10 -5.825553750500152E-9 5.888542623931384E-9 -3.548820373169843E-11
i -4.54343493878074E-16 1.134945682486922E-15 2.47946474907516E-13 3.557415414506385E-11 -3.548820373169843E-11 1.177277557987035E-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 14.84   n/a E2021B10  
diameter diameter 2.879 km 0.832 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.370   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15990 (1998 YT1)          Discovered 1998-Dec-17 by Korlevic, K. at Visnjan
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 YT1 = 1990 QS19 = 1990 RT11 = 1996 FX23 = 1996 GY18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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