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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297704939998392 3.1686e-08  
a 2.234426946913601 5.7174e-09 au
q 1.944464258206071 7.1088e-08 au
i 4.9400065592661 3.6147e-06 deg
node 74.66835925726946 4.3818e-05 deg
peri 196.5951939065778 4.6404e-05 deg
M 347.4485733205174 1.6542e-05 deg
tp 2458643.034199129503
(2019-Jun-08.53419913)
5.6107e-05 TDB
period 1219.965831585643
3.34
4.6824e-06
1.282e-08
d
yr
n .2950902317748459 1.1326e-09 deg/d
Q 2.524389635621132 6.4593e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2460  
   data-arc span      28217 days (77.25 yr)  
   first obs. used      1942-05-18  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4611  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:18:55  

Additional Information
 Earth MOID = .928451 au 
 Jupiter MOID = 2.5553 au 
 T_jup = 3.623 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.32   n/a PDS3 (MPC 17262)  
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-January); 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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