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1122 Neith (1928 SB)
Classification: Main-belt Asteroid          SPK-ID: 2001122
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 .2558136815720388 3.9146e-08  
a 2.608299544421691 1.0048e-08 au
q 1.941060835320506 1.0209e-07 au
i 4.733735521286029 4.3243e-06 deg
node 63.38374878393805 4.6793e-05 deg
peri 328.7643569227738 4.7468e-05 deg
M 265.2055854349703 1.188e-05 deg
tp 2459405.649095020244
(2021-Jul-10.14909502)
5.2429e-05 TDB
period 1538.6315203965
4.21
8.891e-06
2.434e-08
d
yr
n .233974148603968 1.352e-09 deg/d
Q 3.275538253522874 1.2618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2475  
   data-arc span      35032 days (95.91 yr)  
   first obs. used      1924-11-24  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:22:15  

Additional Information
 Earth MOID = .949126 au 
 Jupiter MOID = 2.16663 au 
 T_jup = 3.359 
[ 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 11.81   n/a E2021B10  
diameter diameter 11.566 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.599 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:
[Oey, J. (2009) Minor Planet Bull. 36, 162-165.]
geometric albedo albedo 0.284   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1122 Neith (1928 SB)          Discovered 1928-Sep-17 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1928 SB = 1941 YH = 1953 OA = A924 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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