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4775 Hansen (1927 TC)
Classification: Mars-crossing Asteroid          SPK-ID: 2004775
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .452587461430162 1.4393e-08  
a 2.394548023704022 4.9358e-09 au
q 1.310805612383207 3.4692e-08 au
i 9.270603782077309 7.0208e-07 deg
node 336.4922539773768 4.1825e-06 deg
peri 7.798813520914461 4.0271e-06 deg
M 56.71644556884035 1.8479e-06 deg
tp 2458987.273951351350
(2020-May-17.77395135)
6.4798e-06 TDB
period 1353.423627726176
3.71
4.1847e-06
1.146e-08
d
yr
n .2659921052248948 8.2243e-10 deg/d
Q 3.478290435024836 7.1697e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2149  
   data-arc span      34121 days (93.42 yr)  
   first obs. used      1927-10-03  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47634  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:45:36  

Additional Information
 Earth MOID = .301935 au 
 Jupiter MOID = 1.95196 au 
 T_jup = 3.367 
[ 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 13.91   n/a E2021B10  
rotation period rot_per 3.1185 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Sada, P.V.; Olguin, L.; Saucedo, J.C.; Loera-Gonzalez, P.; et al. (2017) Minor Planet Bull. 44, 239-242.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 116-120.]

4775 Hansen (1927 TC)          Discovered 1927-Oct-03 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 TC = 1990 JA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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