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1579 Herrick (1948 SB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001579
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1258183123125219 3.1477e-08  
a 3.437398312788847 1.507e-08 au
q 3.004910658327844 1.0796e-07 au
i 8.762149344261713 4.0149e-06 deg
node 184.1183027806781 2.2979e-05 deg
peri 279.7368804575838 2.8592e-05 deg
M 69.76823419111462 1.5567e-05 deg
tp 2458749.373388357341
(2019-Sep-22.87338836)
0.00010065 TDB
period 2327.786880007355
6.37
1.5308e-05
4.191e-08
d
yr
n .1546533332118714 1.0171e-09 deg/d
Q 3.86988596724985 1.6966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3084  
   data-arc span      33341 days (91.28 yr)  
   first obs. used      1929-10-09  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42827  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:56:34  

Additional Information
 Earth MOID = 2.03805 au 
 Jupiter MOID = 1.38061 au 
 T_jup = 3.108 
[ show covariance matrix ]

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 10.69   n/a E2021B10 IRAS observations used: 14
diameter diameter 46.925 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 21.33 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.]
[Polakis, T. (2020) Minor Planet Bull. 47, 177-186.]
geometric albedo albedo 0.043   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.645   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.73 deg.
U-B UB 0.289   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.73 deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1579 Herrick (1948 SB)          Discovered 1948-Sep-30 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1948 SB = 1925 DA = 1929 TF = 1931 BP = 1942 VS = 1950 BG = 1951 GZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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