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12161 Avienius (1158 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2012161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .206623875835058 3.756e-08  
a 2.397861075961225 7.6516e-09 au
q 1.902405726732094 8.9437e-08 au
i 1.694144135961518 4.5355e-06 deg
node 223.8313524704334 0.00011674 deg
peri 188.8172674543432 0.00011711 deg
M 168.4778580545233 9.4402e-06 deg
tp 2458365.790811583974
(2018-Sep-04.29081158)
3.4276e-05 TDB
period 1356.23345683694
3.71
6.4916e-06
1.777e-08
d
yr
n .2654410257947816 1.2705e-09 deg/d
Q 2.893316425190355 9.2326e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1026  
   data-arc span      17022 days (46.60 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:40:59  

Additional Information
 Earth MOID = .913489 au 
 Jupiter MOID = 2.47394 au 
 T_jup = 3.498 
[ 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 15.8   n/a MPO452342  
rotation period rot_per 3.13 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

12161 Avienius           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Postumius Rufius Festus Avienius, who lived in the second half of the fourth century, was a Latin poet from Etruria. He composed didactic poems on astronomy and geography. His Aratea was based on earlier Latin translations of Aratus' Phaenomena. The name was suggested by R. H. van Gent.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

[ hide close-approach data ]
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
1926-Jan-22 19:05 00:03 Iris 0.0413775982854993 0.0413700596118444 0.0413851377245952 1.73636838752344 1.73636830750946 2424538.295199500 2.5871181998575 467.841482069848 22.5257478726308 36.828400609347 164585.148715866 T 21 CATAB v2.0f-lin.ifort 2020-May-20 03:41:15 2020-May-20 03:41
2168-Jul-05 23:31 00:02 Amphi 0.0322809871181092 0.0322668306044574 0.032295143669468 2.91692386985683 2.91692380880465 2513092.479996779 2.14415990854323 707.271423526466 36.6646154483797 4.3972763029944 12164.971271058 T 21 CATAB v2.0f-lin.ifort 2020-May-20 03:41:15 2020-May-20 03:41

Alternate Designations
 1158 T-2 = 1977 XZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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