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3187 Dalian (1977 TO3)
Classification: Main-belt Asteroid          SPK-ID: 2003187
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05866778550709904 1.5926e-08  
a 2.283006888726036 6.0672e-09 au
q 2.149067930267027 3.6486e-08 au
i 2.756636583447169 7.733e-07 deg
node 312.2715639361002 1.6585e-05 deg
peri 105.5831443239741 2.3805e-05 deg
M 152.0903630932721 1.5862e-05 deg
tp 2458668.197561492444
(2019-Jul-03.69756149)
5.5692e-05 TDB
period 1259.967258709221
3.45
5.0226e-06
1.375e-08
d
yr
n .2857217102361878 1.139e-09 deg/d
Q 2.416945847185044 6.4231e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2768  
   data-arc span      25580 days (70.03 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:47:57  

Additional Information
 Earth MOID = 1.16214 au 
 Jupiter MOID = 2.74471 au 
 T_jup = 3.600 
[ 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 13.31   n/a E2021B10  
diameter diameter 6.223 km 0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.706 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.262   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3187 Dalian (1977 TO3)          Discovered 1977-Oct-10 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 TO3 = 1958 CB = 1977 UT1 = 1982 AG = 1987 QR5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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