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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 
[ 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 13.8   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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-Sep-04 20:01 < 00:01 Earth 0.312459400005066 0.312458143478605 0.312460658543327 5.29495101408325 5.2933402836026 2415632.334348197 0.323320524369297 1295.05197809297 16.0539855532573 -87.3170666156054 2109964.89283572 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
1964-Aug-21 10:48 < 00:01 Earth 0.397987771506207 0.397986066827491 0.397989476188225 5.23926191287716 5.23798392866203 2438628.950021066 0.232090359227516 107.614810115259 42.1253459616558 41.7843591095212 1056420.81575725 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
1990-Sep-05 12:01 < 00:01 Earth 0.317866715460267 0.317866331317986 0.317867099654188 5.19262654304952 5.19101200703896 2448140.000953809 0.087957453601782 325.123732847784 14.9939242440695 -87.8957189599825 2191255.66428238 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2005-Jun-07 13:04 < 00:01 Mars 0.0692695813700616 0.0692690390603126 0.0692701236833898 7.49699200480878 7.49644069903006 2453529.044213467 0.163078636838514 39.1250280747509 12.9323874135759 49.9713699247515 611367.636594989 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2016-Sep-05 13:53 < 00:01 Earth 0.308114705327314 0.308114423823731 0.30811498683293 5.25354950266231 5.25190317924688 2457637.078744445 0.0270836077003388 106.133613932218 13.0102384344987 87.1283191477827 2527579.50048914 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2053-Aug-14 23:36 < 00:01 Earth 0.476121805767611 0.476120400156544 0.476123211379139 4.79997345171003 4.79880742579515 2471129.483141159 0.208024843237247 76.8020520149326 46.5972893662099 -30.9104141987971 1369315.81601047 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2079-Aug-24 08:27 < 00:01 Earth 0.387995700243707 0.387993533489206 0.387997867004119 5.18881829011637 5.18749464250964 2480634.852002267 0.283765718439553 136.209163466636 44.5321253147826 40.1095586652674 908479.172396433 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2105-Sep-08 15:26 < 00:01 Earth 0.31851378187239 0.31851262799682 0.318514936475762 5.16722789790316 5.16560872002649 2490146.142853614 0.286289024602132 802.686081984722 18.2409351651821 -86.0995305276572 1885083.09772157 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2131-Sep-09 21:09 < 00:01 Earth 0.318956191675535 0.318954688918261 0.31895769559436 5.14458903737038 5.14296498815415 2499643.381430416 0.388460087882763 994.991922219013 18.9426576044578 -85.8190687748264 1827250.20661181 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2138-Dec-19 16:54 00:02 Mars 0.0738163778513073 0.0738115334984066 0.0738212224045825 7.75815216092996 7.75765223097934 2502301.204327841 1.49559772896267 308.643609685595 13.8669257082901 38.5396399727384 473591.638480345 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2168-Aug-23 22:39 < 00:01 Earth 0.404596277772252 0.404592356320107 0.404600199239207 5.04712737063974 5.04582239514117 2513141.443654908 0.54191371307901 232.585699640593 48.2483609214135 33.5973320023855 778358.016904855 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48
2194-Aug-25 23:44 < 00:01 Earth 0.393291792456606 0.393288040169663 0.393295544753028 5.11707427265563 5.11575013862514 2522639.488831861 0.504600470893248 212.158895308865 50.4419802000864 29.0231475337455 658365.763466364 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:48:53 2020-Nov-13 03:48

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