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11734 (1998 KM55)
Classification: Main-belt Asteroid          SPK-ID: 2011734
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304078037152343 1.4153e-08  
a 2.650331483939924 1.0502e-08 au
q 2.304707576001981 3.8522e-08 au
i 12.48836464839099 4.5506e-07 deg
node 221.5056488275946 7.8132e-07 deg
peri 254.4934033569845 8.3615e-06 deg
M 210.9007124063138 1.0129e-05 deg
tp 2459853.212286766658
(2022-Sep-30.71228677)
4.6042e-05 TDB
period 1575.972809986434
4.31
9.3674e-06
2.565e-08
d
yr
n .2284303369441374 1.3578e-09 deg/d
Q 2.995955391877867 1.1872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2411  
   data-arc span      26324 days (72.07 yr)  
   first obs. used      1948-11-24  
   last obs. used      2020-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40152  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:56:19  

Additional Information
 Earth MOID = 1.35734 au 
 Jupiter MOID = 2.25896 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457248.5 (2015-Aug-14.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131399205839573 1.4103e-08  
q 2.299868528581998 3.8428e-08 au
tp 2456698.852670416614
(2014-Feb-10.35267042)
4.0502e-05 TDB
node 221.7053978546935 7.808e-07 deg
peri 253.3526354440211 8.3372e-06 deg
i 12.5092540496623 4.5679e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2411  
   data-arc span      26324 days (72.07 yr)  
   first obs. used      1948-11-24  
   last obs. used      2020-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40152  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:56:19  

Additional Information
 Jupiter MOID = 2.25896 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.989032682152268E-16 -5.272372050576837E-16 2.180197482268382E-13 2.294204086255313E-15 2.620879238806674E-14 1.29845119686682E-15
q -5.272372050576837E-16 1.476736069848627E-15 -5.443940133689417E-13 -5.789482851442784E-15 -5.767903508230532E-14 -3.293055900532129E-15
tp 2.180197482268382E-13 -5.443940133689417E-13 1.640401489687945E-9 -1.299407095651155E-11 3.315390872115646E-10 -8.281996857809125E-12
node 2.294204086255313E-15 -5.789482851442784E-15 -1.299407095651155E-11 6.096480797222908E-13 -3.213893708112435E-12 2.034691544911763E-13
peri 2.620879238806674E-14 -5.767903508230532E-14 3.315390872115646E-10 -3.213893708112435E-12 6.950853625993821E-11 -2.01300214612862E-12
i 1.29845119686682E-15 -3.293055900532129E-15 -8.281996857809125E-12 2.034691544911763E-13 -2.01300214612862E-12 2.086608235861916E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.52   n/a E2021B10  
diameter diameter 7.705 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.667 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.]
geometric albedo albedo 0.326   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

11734 (1998 KM55)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KM55 = 1948 WO = 1976 JF1 = 1978 TZ2 = 1991 XM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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