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1229 Tilia (1931 TP1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001229
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660453223139119 1.5933e-08  
a 3.226144105095397 1.1892e-08 au
q 2.690457967333705 5.3631e-08 au
i 1.03926601595336 1.1097e-06 deg
node 197.3425697029758 2.0382e-05 deg
peri 166.6095057805703 2.1209e-05 deg
M 128.0722492388107 8.1627e-06 deg
tp 2458447.531849302431
(2018-Nov-25.03184930)
4.5964e-05 TDB
period 2116.528255435534
5.79
1.1703e-05
3.204e-08
d
yr
n .1700898625262718 9.4046e-10 deg/d
Q 3.761830242857089 1.3867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3503  
   data-arc span      32674 days (89.46 yr)  
   first obs. used      1931-10-06  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42782  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:18:31  

Additional Information
 Earth MOID = 1.68676 au 
 Jupiter MOID = 1.70145 au 
 T_jup = 3.166 
[ 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 11.42   n/a E2021B10  
diameter diameter 27.795 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.035 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Contreras, M.E.; Olguin, L.; Loera-Gonzalez, L.; Saucedo, J.C.; et al. (2019) Minor Planet Bull. 46, 381-383.]
[Klinglesmith III, D.A.; Lovato, E.A. (2019) Minor Planet Bull. 46, 81-82.]
[Noschese, A.; Vecchione, A. (2019) Minor Planet Bull. 46, 77.]
[Owings, L.E. (2019) Minor Planet Bull. 46, 272-274.]
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1229 Tilia (1931 TP1)          Discovered 1931-Oct-09 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TP1 = 1936 MC = 1942 PH = 1948 PT = 1951 AC = 1951 CM = 1973 YW3 = 1975 FP = 1976 KB1 = 1977 RC4 = 1978 VK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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