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1545 Thernoe (1941 UW)
Classification: Main-belt Asteroid          SPK-ID: 2001545
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2382457763740629 1.9063e-08  
a 2.770641622808678 7.4708e-09 au
q 2.110547958328331 5.4003e-08 au
i 2.953407339218942 1.0345e-06 deg
node 51.79862278437788 3.9167e-06 deg
peri 90.29897024301974 4.7775e-06 deg
M 341.8070838504178 3.4465e-06 deg
tp 2459285.627283604564
(2021-Mar-12.12728360)
1.6252e-05 TDB
period 1684.492021272067
4.61
6.8132e-06
1.865e-08
d
yr
n .2137142803016313 8.644e-10 deg/d
Q 3.430735287289025 9.2507e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3079  
   data-arc span      42003 days (115.00 yr)  
   first obs. used      1906-03-21  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:34:06  

Additional Information
 Earth MOID = 1.12569 au 
 Jupiter MOID = 1.60028 au 
 T_jup = 3.294 
[ 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 11.88   n/a E2021B10  
diameter diameter 18.656 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 17.20 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
geometric albedo albedo 0.097   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B K   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1545 Thernoe (1941 UW)          Discovered 1941-Oct-15 by Oterma, L. at Turku
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
1904-May-14 20:52 00:01 Jupiter 1.90356098928161 1.90355996055438 1.90356201800764 1.98186729236586 1.74294671211162 2416615.369639849 1.38516553427592 42.1559507683178 15.2835532142809 51.7036451729084 1507520.9215881 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
1926-Oct-17 00:22 00:01 Jupiter 1.60513555211868 1.60513538802638 1.60513571621099 0.641202537973979 n/a 2424805.514955160 1.00523447358662 44.1485115294064 8.08750566711056 -88.357535932449 29670188.4234197 F 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
1949-Mar-24 14:31 < 00:01 Jupiter 1.9310164975972 1.93101588606896 1.93101710912457 1.44871470790839 1.10521166254968 2433000.104717543 0.79845826583415 124.740613719104 10.2659836663832 12.6843437338722 4756735.33072587 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
1987-Apr-27 16:40 < 00:01 Jupiter 1.84977487489798 1.84977457865991 1.84977517113595 1.73825197260292 1.45110594507139 2446913.194227201 0.367301904545869 43.4440764622101 17.0481599478103 58.8313207664248 4427864.14957984 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2009-Oct-03 12:26 < 00:01 Jupiter 1.60194571503033 1.60194555886593 1.60194587119482 0.622163752103658 n/a 2455108.017837467 0.100543386777178 21.5366993313215 3.30404080565958 -70.6495429220114 68511921.4923846 F 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2032-Mar-06 07:05 < 00:01 Jupiter 1.98466317982397 1.98466291762077 1.98466344202705 1.6558587989179 1.37415440951983 2463297.795269676 0.251805262087943 24.3946279930579 5.5912399701494 3.96930596277317 4194734.91116065 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2070-Apr-07 20:57 < 00:01 Jupiter 1.79495001568609 1.7949495342118 1.79495049716108 1.51054192880655 1.15669916794098 2477209.372724603 0.67036296364587 142.623094054776 27.2488756675474 44.6426735472092 4822158.20505233 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2092-Sep-17 21:51 < 00:01 Jupiter 1.61353308884969 1.61353282818419 1.6135333495152 0.638697247167141 n/a 2485408.410604748 0.89458552915298 28.7601451048296 12.5871542716106 82.7945280068547 19048750.2769436 F 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2153-Mar-23 17:52 00:02 Jupiter 1.75453091731712 1.75452985865995 1.75453197598895 1.34783533296117 0.922569345150351 2507509.244607010 1.67674030273953 573.67050201811 39.6405092775125 40.1825142515484 5791766.32783984 T 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35
2175-Sep-06 14:29 00:02 Jupiter 1.63375646212974 1.63375581042885 1.63375711383073 0.678604233600131 n/a 2515711.103454774 1.85936147421763 40.6622951445858 18.1649814697552 42.2072998937719 10072496.3213325 F 41 CATAB v2.0g-lin.ifort 2021-May-03 19:35:05 2021-May-03 19:35

Alternate Designations
 1941 UW = 1932 YD = 1955 VV = 1957 HY = A906 FE = A915 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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