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2145 Blaauw (1976 UF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002145
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09995535262316951 4.6273e-08  
a 3.216874743794839 2.3342e-08 au
q 2.895330894434257 1.4867e-07 au
i 15.0145571618676 4.7753e-06 deg
node 264.2963143865628 1.9612e-05 deg
peri 278.5069945455242 3.1297e-05 deg
M 125.2184928293163 2.4579e-05 deg
tp 2458267.480336690278
(2018-May-28.98033669)
0.00014335 TDB
period 2107.412993312425
5.77
2.2937e-05
6.28e-08
d
yr
n .170825557753705 1.8593e-09 deg/d
Q 3.53841859315542 2.5675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2141  
   data-arc span      15931 days (43.62 yr)  
   first obs. used      1976-10-24  
   last obs. used      2020-06-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:41:26  

Additional Information
 Earth MOID = 1.94539 au 
 Jupiter MOID = 1.7251 au 
 T_jup = 3.129 
[ 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 11.0   n/a MPO452191  
diameter diameter 40.549 km 0.848 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.141 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:
[Moravec, P.; Cochren, J.; Gerhardt, M.; Harris, A.; et al. (2012) Minor Planet Bull. 39, 213-216.]
geometric albedo albedo 0.051   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2145 Blaauw (1976 UF)          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
1929-Aug-07 09:06 00:04 Jupiter 1.89156468290309 1.89156385104906 1.8915655147754 5.10158658308528 5.01304368313082 2425830.879479374 3.58774891237197 386.90334311966 25.3629339976008 86.1163210507265 3479684.28500282 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1940-Nov-22 00:25 00:03 Jupiter 1.85859535310289 1.85859477633879 1.85859592986762 4.23552031842305 4.12651997969456 2429955.517022275 3.26905729990434 302.714413707465 26.1678421177545 -86.4948186137829 2530270.93395331 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1952-Feb-25 13:04 00:03 Jupiter 1.87789406269403 1.87789335681459 1.87789476857484 3.03369831310983 2.881185027076 2434068.044699899 3.14570416778347 170.897274926363 33.066962154351 -68.8895161448826 1230500.50726907 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1963-Apr-23 08:19 00:03 Jupiter 1.90408472170268 1.90408403482854 1.90408540857661 1.77154040395806 1.499555086585 2438142.846710663 2.98038456171839 145.933144868074 38.9135318811141 -46.2927652890267 1744517.95359962 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1974-Jun-13 03:32 00:02 Jupiter 1.89564472604763 1.89564402366066 1.89564542843719 2.64451451894757 2.46977851667279 2442211.647411793 1.96893451327369 476.737779691689 36.6047942404392 83.395304603446 2261321.36648005 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1985-Sep-12 15:54 00:01 Jupiter 1.88508748549477 1.88508687618543 1.88508809480412 3.86066312886503 3.74246761815709 2446321.162832785 1.1440173018271 142.180933022486 30.7552723014429 87.973979493655 2270539.59273844 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
1997-Jan-03 20:58 < 00:01 Jupiter 1.91071791650939 1.91071739833522 1.91071843468356 4.70287097900646 4.60764518194759 2450452.373664880 0.641226538036152 102.328806865299 24.7068540025395 88.16014251689 3190729.96710311 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2008-Apr-28 20:14 < 00:01 Jupiter 1.99367662727168 1.99367616815617 1.9936770863872 5.3272333041707 5.24687579877826 2454585.342893858 0.315023423611491 75.6186601569493 21.3016878451701 85.5842760190276 3966947.3106288 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2131-Nov-21 03:48 00:03 Jupiter 1.95075080155599 1.9507492466266 1.95075235649535 5.53890203295259 5.45994771479758 2499715.658432976 2.67376743215411 255.082720120899 30.7701238277287 74.2286863851297 3708498.0724241 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2143-Mar-14 00:14 00:03 Jupiter 1.82343558725407 1.82343468144792 1.82343649307556 5.05037537744142 4.95754487778518 2503846.509761413 2.86371089508074 331.41763452449 25.1024490524266 84.3198848114442 3334811.3328072 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2154-Jul-13 17:09 00:03 Jupiter 1.78343855463868 1.78343798797406 1.78343912130514 4.41288424168398 4.30391351936954 2507986.214924963 3.25063474527171 357.075182968287 25.1885904979277 -87.378649775899 2717169.21830391 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2165-Nov-05 08:41 00:04 Jupiter 1.81712745224917 1.8171263429912 1.81712856152067 3.51238932457096 3.37707171645694 2512118.861838524 4.10304018956256 304.435038891325 28.5573177168737 -75.0821961426656 1786094.71284782 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2177-Jan-27 07:50 00:06 Jupiter 1.88421683745989 1.8842155212353 1.88421815368887 2.23465159671078 2.02351095656041 2516219.826716523 5.76540537081226 273.051060754676 64.0643075185708 -10.5343559353197 388856.178965524 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2188-Mar-10 20:47 00:07 Jupiter 1.92936852203596 1.92936770917233 1.92936933503976 2.09292390360414 1.87144319793547 2520280.366141609 6.68751556220632 1494.62951289552 40.196663616377 80.1340088212919 2143846.01908835 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41
2199-May-18 07:57 00:06 Jupiter 1.94843076116229 1.94843012573132 1.9484313965937 3.50690611717657 3.38067298048345 2524365.830927126 6.2075390879947 258.613192184204 36.3003929013405 81.6915505431528 680367.884359459 T 33 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:38 2020-Jun-23 15:41

Alternate Designations
 1976 UF = 1929 XS = 1963 RK = 1980 TW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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