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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1658905923076428 3.3663e-08  
a 3.226197059348896 1.3136e-08 au
q 2.691001318272332 1.1141e-07 au
i 1.039164468382681 3.7326e-06 deg
node 197.3569792933487 0.00018233 deg
peri 166.5829555857463 0.00018258 deg
M 94.08560647180984 9.8641e-06 deg
tp 2458447.334034787463
(2018-Nov-24.83403479)
5.7232e-05 TDB
period 2116.58036701055
5.79
1.2927e-05
3.539e-08
d
yr
n .1700856748040532 1.0388e-09 deg/d
Q 3.76139280042546 1.5315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3167  
   data-arc span      32549 days (89.11 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43848  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:17  

Additional Information
 Earth MOID = 1.68888 au 
 Jupiter MOID = 1.70089 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 11.3   n/a MPO250207  
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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