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1016 Anitra (A924 CG)
Classification: Main-belt Asteroid          SPK-ID: 2001016
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284046757619526 3.1086e-08  
a 2.218824888351545 5.0412e-09 au
q 1.933917397990214 6.8543e-08 au
i 6.034929430105499 4.1674e-06 deg
node 8.839166701452424 2.8745e-05 deg
peri 53.16521543724074 3.3158e-05 deg
M 173.9701017983569 1.6381e-05 deg
tp 2458617.115230558049
(2019-May-13.61523056)
5.434e-05 TDB
period 1207.210404708092
3.31
4.1142e-06
1.126e-08
d
yr
n .2982081653670384 1.0163e-09 deg/d
Q 2.503732378712876 5.6886e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3036  
   data-arc span      35259 days (96.53 yr)  
   first obs. used      1924-02-01  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38308  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:04:08  

Additional Information
 Earth MOID = .952394 au 
 Jupiter MOID = 2.79069 au 
 T_jup = 3.633 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456674.5 (2014-Jan-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278644908241246 3.1016e-08  
q 1.935347442033092 6.8347e-08 au
tp 2456201.222673313544
(2012-Sep-30.72267331)
5.3121e-05 TDB
node 8.87821824097346 2.8725e-05 deg
peri 53.01647865043329 3.3198e-05 deg
i 6.037614895729352 4.1681e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3036  
   data-arc span      35259 days (96.53 yr)  
   first obs. used      1924-02-01  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38308  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:04:08  

Additional Information
 Jupiter MOID = 2.79069 au 
 T_jup = 3.633 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.619858011370553E-16 -2.115505448849761E-15 -5.13318253142747E-13 2.402807773415389E-15 -1.762860115976976E-13 -6.119808529649014E-16
q -2.115505448849761E-15 4.671351569867876E-15 1.169300153284511E-12 -5.739958177517651E-15 4.009235241985095E-13 1.390225024726E-15
tp -5.13318253142747E-13 1.169300153284511E-12 2.821843647210936E-9 -9.394478300900281E-12 8.901550461337429E-10 -8.620861568308611E-13
node 2.402807773415389E-15 -5.739958177517651E-15 -9.394478300900281E-12 8.251012394819361E-10 -8.227378650872738E-10 -4.329403650826832E-12
peri -1.762860115976976E-13 4.009235241985095E-13 8.901550461337429E-10 -8.227378650872738E-10 1.102089027019698E-9 4.05134857786054E-12
i -6.119808529649014E-16 1.390225024726E-15 -8.620861568308611E-13 -4.329403650826832E-12 4.05134857786054E-12 1.737297545820039E-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 11.95   n/a E2021B10  
diameter diameter 9.539 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.92951 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Menke, J. (2005) Minor Planet Bull. 32, 64-66.]
[Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bull. 33, 92-95.]
[Menke, J. (2011) http://menkescientific.com/lightcrv.html]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
[Pilcher, F.; Benishek, V.; Jacobsen, J.; Kristensen, L.H.; et al. (2016) Minor Planet Bull. 43, 274-277.]
[Schmidt, R.E. (2016) Minor Planet Bull. 43, 129-131.]
[Klinglesmith III, D.K. (2017) Minor Planet Bull. 44, 345-348.]
[Lang, K. (2020) Minor Planet Bull. 47, 322-323.]
geometric albedo albedo 0.308   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   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)

1016 Anitra (A924 CG)          Discovered 1924-Jan-31 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A924 CG = 1929 TE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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