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2115 Irakli (1976 UD)
Classification: Main-belt Asteroid          SPK-ID: 2002115
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05118122773155876 2.463e-08  
a 3.01356740680886 1.2589e-08 au
q 2.859329327076573 7.4768e-08 au
i 8.972730074435898 4.3757e-07 deg
node 241.4136243550792 1.9649e-06 deg
peri 340.0951951851944 1.8716e-05 deg
M 53.67863846742622 1.6955e-05 deg
tp 2458915.582724418735
(2020-Mar-07.08272442)
8.9889e-05 TDB
period 1910.820060600046
5.23
1.1973e-05
3.278e-08
d
yr
n .1884007853083512 1.1805e-09 deg/d
Q 3.167805486541148 1.3233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2928  
   data-arc span      30864 days (84.50 yr)  
   first obs. used      1936-04-17  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:21:05  

Additional Information
 Earth MOID = 1.85027 au 
 Jupiter MOID = 1.83675 au 
 T_jup = 3.228 
[ 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 11.17   n/a E2021B10 IRAS observations used: 2
diameter diameter 21.381 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.765 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.155   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2115 Irakli (1976 UD)          Discovered 1976-Oct-24 by West, R. M. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1928-Jul-19 00:09 00:02 Jupiter 1.84405769197313 1.8440573963083 1.8440579876389 3.30329508701508 3.16118769767684 2425446.506121257 1.69788007101231 112.747361266693 9.13261015154302 -82.8016185193985 6856097.6199268 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
1975-Feb-20 08:09 < 00:01 Jupiter 1.94174277304124 1.9417424822397 1.9417430638429 2.97531721274442 2.82490303788124 2442463.839783228 0.826702367899633 42.4704058306464 6.75981618240086 -75.5795459206297 6164371.78878688 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
2012-Aug-22 07:43 < 00:01 Jupiter 1.87580800939174 1.87580780675421 1.87580821202927 3.87462032747387 3.75627224580399 2456161.821264333 0.141286703263361 12.4684217115408 8.17270014746359 -73.6897389097647 8697746.81885989 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
2059-Apr-13 05:51 < 00:01 Jupiter 1.8282708808669 1.82827063390147 1.82827112783243 3.4864159366248 3.35089733004707 2473196.743963838 0.860480557512253 61.8003084242984 9.24665799831495 -84.2070744399598 7138167.75544561 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
2105-Nov-20 11:07 00:02 Jupiter 1.91130120283354 1.91130062063625 1.91130178503237 3.11250929218686 2.96671254880854 2490218.962944156 1.8479769626599 99.1631647177332 8.02904536176356 -72.4309869785494 6553310.37818387 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
2143-May-14 07:33 00:02 Jupiter 1.90905971384039 1.90905889846614 1.90906052921866 3.9327087283985 3.8182229539438 2503907.814293777 2.38968687686354 150.496994162032 9.20243919935954 75.6383712375785 7973633.81209056 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22
2190-Jan-05 02:50 00:03 Jupiter 1.81993904716798 1.81993880674744 1.81993928758997 3.63201010727833 3.50152427911553 2520945.618096063 3.30423747399687 252.74294763839 9.32623695315712 -89.6865850387766 7323378.36708392 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 13:22:54 2021-Apr-12 13:22

Alternate Designations
 1976 UD = 1948 PY = 1952 HZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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