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1575 Winifred (1950 HH)
Classification: Main-belt Asteroid          SPK-ID: 2001575
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 .1791203352009546 2.156e-08  
a 2.374186462712514 5.9189e-09 au
q 1.948921387681879 5.2148e-08 au
i 24.82415022708797 5.8258e-07 deg
node 206.7857672562407 1.4012e-06 deg
peri 348.5714767532972 5.4989e-06 deg
M 121.6698179819248 3.7193e-06 deg
tp 2458748.903028283935
(2019-Sep-22.40302828)
1.3419e-05 TDB
period 1336.197526340801
3.66
4.9968e-06
1.368e-08
d
yr
n .2694212441672945 1.0075e-09 deg/d
Q 2.799451537743148 6.9791e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2791  
   data-arc span      33871 days (92.73 yr)  
   first obs. used      1928-04-18  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:38:23  

Additional Information
 Earth MOID = .94854 au 
 Jupiter MOID = 2.1712 au 
 T_jup = 3.398 
[ 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 12.15   n/a E2021B10  
diameter diameter 9.488 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 125. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2010) Minor Planet Bull. 37, 24-27.]
geometric albedo albedo 0.236   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1575 Winifred (1950 HH)          Discovered 1950-Apr-20 by Cameron, R. C. at Brooklyn
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 HH = 1928 HG = 1939 GK = 1950 HD1 = 1977 UH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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