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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294643620075094 3.1284e-08  
a 2.233731824534496 5.5027e-09 au
q 1.944543158975268 6.9888e-08 au
i 4.93974795718189 3.5598e-06 deg
node 74.6660303123346 4.2566e-05 deg
peri 196.5131760386197 4.5061e-05 deg
M 105.60599357635 1.61e-05 deg
tp 2458642.790033480214
(2019-Jun-08.29003348)
5.4122e-05 TDB
period 1219.396585232846
3.34
4.5059e-06
1.234e-08
d
yr
n .2952279876454283 1.0909e-09 deg/d
Q 2.522920490093725 6.2151e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2749  
   data-arc span      28656 days (78.46 yr)  
   first obs. used      1942-05-18  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:17:20  

Additional Information
 Earth MOID = .928985 au 
 Jupiter MOID = 2.55665 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456097.5 (2012-Jun-19.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1302729319091715 3.1359e-08  
q 1.94300486491586 7.0163e-08 au
tp 2456202.836100505212
(2012-Oct-02.33610051)
5.1691e-05 TDB
node 74.72184165989286 4.2512e-05 deg
peri 196.336008122775 4.4969e-05 deg
i 4.943112781982043 3.5621e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2749  
   data-arc span      28656 days (78.46 yr)  
   first obs. used      1942-05-18  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:17:20  

Additional Information
 Jupiter MOID = 2.55665 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.833667226845262E-16 -2.195041501608733E-15 -7.308992885383652E-14 -1.158560451507502E-15 -6.615779270728827E-15 -9.327864068395985E-17
q -2.195041501608733E-15 4.922786623240246E-15 1.977131138429395E-13 2.47825979616438E-15 2.296121990894213E-14 2.707819297511087E-16
tp -7.308992885383652E-14 1.977131138429395E-13 2.671949849761064E-9 3.295690318482388E-12 7.699373879676192E-10 8.810093804350363E-13
node -1.158560451507502E-15 2.47825979616438E-15 3.295690318482388E-12 1.807230032756205E-9 -1.799091673360658E-9 -4.573611092112357E-12
peri -6.615779270728827E-15 2.296121990894213E-14 7.699373879676192E-10 -1.799091673360658E-9 2.022170253974727E-9 4.81849449022839E-12
i -9.327864068395985E-17 2.707819297511087E-16 8.810093804350363E-13 -4.573611092112357E-12 4.81849449022839E-12 1.268888450472145E-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 12.3   n/a MPO492769  
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. 2019-August); 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.]
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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