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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4525530059528023 3.835e-08  
a 2.394207940267154 5.2177e-09 au
q 1.310701940023186 9.2356e-08 au
i 9.270589695088713 4.5959e-06 deg
node 336.4939790318501 1.8442e-05 deg
peri 7.78245604169595 1.8601e-05 deg
M 3.5234482409613 2.6928e-06 deg
tp 2458987.256382701704
(2020-May-17.75638270)
1.0099e-05 TDB
period 1353.135309882071
3.70
4.4233e-06
1.211e-08
d
yr
n .2660487812053141 8.6969e-10 deg/d
Q 3.477713940511122 7.5789e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      33997 days (93.08 yr)  
   first obs. used      1927-10-03  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49801  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:48:49  

Additional Information
 Earth MOID = .303644 au 
 Jupiter MOID = 1.95181 au 
 T_jup = 3.367 
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Orbital Elements at Epoch 2456972.5 (2014-Nov-11.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .452049811140331 3.824e-08  
q 1.312413242081096 9.2016e-08 au
tp 2457635.456901347385
(2016-Sep-03.95690135)
8.7902e-06 TDB
node 336.5290489438636 1.8436e-05 deg
peri 7.830968504552162 1.8597e-05 deg
i 9.270332279047794 4.5951e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      33997 days (93.08 yr)  
   first obs. used      1927-10-03  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49801  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:48:49  

Additional Information
 Jupiter MOID = 1.95181 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.462327924778697E-15 -3.517066160045249E-15 1.844471050553038E-14 -2.382287183634841E-14 1.75772999070703E-14 -2.01952280947553E-14
q -3.517066160045249E-15 8.466894133869866E-15 -4.399593124944786E-14 5.861581441501951E-14 -4.501332575156439E-14 4.912458647457619E-14
tp 1.844471050553038E-14 -4.399593124944786E-14 7.726848791311352E-11 -4.524666009427839E-13 2.851390863111514E-11 -8.025948339615381E-13
node -2.382287183634841E-14 5.861581441501951E-14 -4.524666009427839E-13 3.398905179036944E-10 -3.341977457161314E-10 9.492770277292143E-12
peri 1.75772999070703E-14 -4.501332575156439E-14 2.851390863111514E-11 -3.341977457161314E-10 3.458613464934547E-10 -9.429118170025485E-12
i -2.01952280947553E-14 4.912458647457619E-14 -8.025948339615381E-13 9.492770277292143E-12 -9.429118170025485E-12 2.111504399370901E-11

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 13.8   n/a MPO435744  
rotation period rot_per 3.1185 h n/a LCDB (Rev. 2019-August); 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

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