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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2558136853695868 3.9945e-08  
a 2.608299545086097 1.0158e-08 au
q 1.941060825909806 1.0396e-07 au
i 4.733735779242535 4.3752e-06 deg
node 63.38374631060802 4.7267e-05 deg
peri 328.764359509211 4.7926e-05 deg
M 265.2055847815634 1.1967e-05 deg
tp 2459405.649097967694
(2021-Jul-10.14909797)
5.2831e-05 TDB
period 1538.631520984399
4.21
8.988e-06
2.461e-08
d
yr
n .2339741485145684 1.3668e-09 deg/d
Q 3.275538264262388 1.2756e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2414  
   data-arc span      34954 days (95.70 yr)  
   first obs. used      1924-11-24  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4279  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:28:40  

Additional Information
 Earth MOID = .949126 au 
 Jupiter MOID = 2.16663 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456523.5 (2013-Aug-19.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2572636979375326 3.9992e-08  
q 1.936139823572677 1.0408e-07 au
tp 2456334.840776761301
(2013-Feb-11.34077676)
4.181e-05 TDB
node 63.42120390675519 4.7195e-05 deg
peri 329.2405405612138 4.7841e-05 deg
i 4.739158462104887 4.3808e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2414  
   data-arc span      34954 days (95.70 yr)  
   first obs. used      1924-11-24  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4279  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:28:40  

Additional Information
 Jupiter MOID = 2.16663 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.599335477769995E-15 -4.151440422934373E-15 2.082079892474444E-13 4.096856128366269E-15 1.339553660364529E-14 5.291690105782013E-16
q -4.151440422934373E-15 1.083261068194517E-14 -4.065794667982905E-13 -1.052167424427966E-14 -1.027800661659477E-14 -1.409889257635778E-15
tp 2.082079892474444E-13 -4.065794667982905E-13 1.748113575556573E-9 2.397173492594266E-12 3.445696756088999E-10 -6.17167995782217E-13
node 4.096856128366269E-15 -1.052167424427966E-14 2.397173492594266E-12 2.227381859141978E-9 -2.21919126348191E-9 -4.736614127408784E-11
peri 1.339553660364529E-14 -1.027800661659477E-14 3.445696756088999E-10 -2.21919126348191E-9 2.288783235426296E-9 4.708232303517815E-11
i 5.291690105782013E-16 -1.409889257635778E-15 -6.17167995782217E-13 -4.736614127408784E-11 4.708232303517815E-11 1.919110187260967E-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 11.8   n/a MPO452174  
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. 2019-August); 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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