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7604 Kridsadaporn (1995 QY2)
Classification: Mars-crossing Asteroid          SPK-ID: 2007604
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5736558752007483 3.0258e-08  
a 3.1123088843799 9.9737e-09 au
q 1.326914607415884 9.4732e-08 au
i 20.44800525024183 4.8668e-06 deg
node 147.2321250301517 1.1927e-05 deg
peri 266.2333301727802 1.2633e-05 deg
M 156.942124413398 4.811e-06 deg
tp 2458126.201986035636
(2018-Jan-07.70198604)
2.4924e-05 TDB
period 2005.499073009243
5.49
9.6402e-06
2.639e-08
d
yr
n .1795064404890607 8.6287e-10 deg/d
Q 4.897703161343916 1.5695e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1730  
   data-arc span      13118 days (35.92 yr)  
   first obs. used      1984-06-23  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46736  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:26:57  

Additional Information
 Earth MOID = .522702 au 
 Jupiter MOID = 1.76016 au 
 T_jup = 2.859 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457117.5 (2015-Apr-05.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5743753509540347 3.0199e-08  
q 1.324291235532406 9.4541e-08 au
tp 2456121.903239873997
(2012-Jul-13.40323987)
2.3149e-05 TDB
node 147.249369050842 1.1932e-05 deg
peri 266.3079755778304 1.2633e-05 deg
i 20.45050636562856 4.8674e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1730  
   data-arc span      13118 days (35.92 yr)  
   first obs. used      1984-06-23  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46736  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:26:57  

Additional Information
 Jupiter MOID = 1.76016 au 
 T_jup = 2.859 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.11982257039101E-16 -2.85217821516121E-15 -3.973383352522564E-13 7.998998825298423E-15 -7.526548378709116E-14 -1.829082325083899E-15
q -2.85217821516121E-15 8.938029552099074E-15 1.233926876521611E-12 -2.332376460940474E-14 2.348022657517696E-13 6.138507275945536E-15
tp -3.973383352522564E-13 1.233926876521611E-12 5.358968091039584E-10 -1.47410189453799E-11 1.187956441388434E-10 3.239673403321653E-12
node 7.998998825298423E-15 -2.332376460940474E-14 -1.47410189453799E-11 1.423799146412477E-10 -1.35339948158909E-10 1.755770989414088E-11
peri -7.526548378709116E-14 2.348022657517696E-13 1.187956441388434E-10 -1.35339948158909E-10 1.595852784926674E-10 -1.580741113562629E-11
i -1.829082325083899E-15 6.138507275945536E-15 3.239673403321653E-12 1.755770989414088E-11 -1.580741113562629E-11 2.369153032860141E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO435771  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7604 Kridsadaporn           Discovered 1995 Aug. 31 by R. H. McNaught at Siding Spring.
Kridsadaporn (San) Ritsmitchai (1964-2004) was born in Songhkla, Thailand. She and her husband Martin Callaway both lived and worked at Siding Spring Observatory. San is remembered in Coonabarabran for her caring nature and community work. She died tragically in a car accident.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1970-Apr-05 22:19 00:01 Jupiter 1.73547086968337 1.73546985243124 1.7354718869362 4.64803950698628 4.54182136857215 2440682.430106397 1.05773825505964 85.3869520991709 31.6958186284862 62.0472665209788 3017716.95733016 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:27:02 2020-Nov-13 03:27
2054-Dec-16 12:23 < 00:01 Jupiter 1.74967523696978 1.74967405393662 1.74967642000283 4.85799722027284 4.75730297346669 2471618.016240217 0.913355251229876 60.83319435858 55.3143347390078 59.8685178038385 1894804.35191702 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:27:02 2020-Nov-13 03:27
2138-Jan-11 06:41 < 00:01 Jupiter 1.69501867423849 1.69501744962477 1.69501989885249 5.43107851085517 5.33827577080552 2501958.778431977 0.829807523117635 165.582968548369 57.7206957703759 -86.1384547924795 2280911.94557668 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:27:02 2020-Nov-13 03:27

Alternate Designations
 1995 QY2 = 1984 QD1 = 1991 CF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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