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1601 Patry (1942 KA)
Classification: Main-belt Asteroid          SPK-ID: 2001601
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1293104898049593 1.0677e-08  
a 2.234132411255515 4.5405e-09 au
q 1.945235654866929 2.3741e-08 au
i 4.939388190624212 3.7129e-07 deg
node 74.66740201416779 4.4239e-06 deg
peri 196.564376199185 7.3997e-06 deg
M 164.591968624934 6.1763e-06 deg
tp 2458642.842009574021
(2019-Jun-08.34200957)
2.0604e-05 TDB
period 1219.724621016166
3.34
3.7183e-06
1.018e-08
d
yr
n .2951485882937084 8.9976e-10 deg/d
Q 2.5230291676441 5.1276e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3007  
   data-arc span      28800 days (78.85 yr)  
   first obs. used      1942-05-18  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42975  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:36:21  

Additional Information
 Earth MOID = .927877 au 
 Jupiter MOID = 2.55561 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456646.5 (2013-Dec-20.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299450421399827 1.066e-08  
q 1.943419260556054 2.3703e-08 au
tp 2456202.659798495708
(2012-Oct-02.15979850)
2.0689e-05 TDB
node 74.7217940319911 4.4178e-06 deg
peri 196.2968341560419 7.3574e-06 deg
i 4.943018004621159 3.7168e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3007  
   data-arc span      28800 days (78.85 yr)  
   first obs. used      1942-05-18  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42975  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:36:21  

Additional Information
 Jupiter MOID = 2.55561 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.136415747817249E-16 -2.491637003773078E-16 9.301594128856547E-14 -1.15040251796125E-14 4.779147881086419E-14 2.353969693195644E-16
q -2.491637003773078E-16 5.618140538487541E-16 -2.249089260125602E-13 2.601482634600242E-14 -1.084446089071544E-13 -5.806118718106968E-16
tp 9.301594128856547E-14 -2.249089260125602E-13 4.280344110655519E-10 1.535155533157473E-11 1.187114067063135E-10 -2.866114938400738E-12
node -1.15040251796125E-14 2.601482634600242E-14 1.535155533157473E-11 1.951735947184477E-11 -1.490164264070526E-11 -1.257120223318846E-12
peri 4.779147881086419E-14 -1.084446089071544E-13 1.187114067063135E-10 -1.490164264070526E-11 5.413122104105277E-11 3.674830669834382E-13
i 2.353969693195644E-16 -5.806118718106968E-16 -2.866114938400738E-12 -1.257120223318846E-12 3.674830669834382E-13 1.381464112316596E-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 12.42   n/a MPCxxxxx  
diameter diameter 7.548 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.92 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.366   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.952   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.27 deg.
U-B UB 0.493   0.052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.27 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Sl   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)

1601 Patry (1942 KA)          Discovered 1942-May-18 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 KA = 1942 KC = 1945 FA = 1949 OG = 1955 DL = A922 KB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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