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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09803106448505851 4.7955e-08  
a 3.221361268221461 2.3133e-08 au
q 2.905567794006773 1.5423e-07 au
i 15.01924515705872 4.848e-06 deg
node 264.31662438886 2.006e-05 deg
peri 279.3554930913009 3.2203e-05 deg
M 56.28899438196975 2.5191e-05 deg
tp 2458270.298862471779
(2018-May-31.79886247)
0.00014782 TDB
period 2111.823293617701
5.78
2.2748e-05
6.228e-08
d
yr
n .1704688082037843 1.8362e-09 deg/d
Q 3.537154742436149 2.5401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1988  
   data-arc span      15640 days (42.82 yr)  
   first obs. used      1976-10-24  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39175  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:22:34  

Additional Information
 Earth MOID = 1.95512 au 
 Jupiter MOID = 1.72065 au 
 T_jup = 3.128 
[ 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-January); 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 1.89156462709515 1.8915637891676 1.89156546504065 5.10158651973128 5.01304361602243 2425830.879509303 3.61025890205033 389.25541453045 26.0525710236363 86.1705473916996 3424940.92675095 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1940-Nov-22 00:25 00:03 Jupiter 1.85859522330612 1.85859463057186 1.85859581604113 4.23552051458016 4.12652017332041 2429955.517051718 3.29012432931013 304.203372304563 26.9567844515178 -86.4279581996959 2486643.13187992 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1952-Feb-25 13:04 00:03 Jupiter 1.87789390316317 1.87789318155596 1.87789462477176 3.03369925109356 2.88118600141194 2434068.044768922 3.16729126247018 171.566470101166 34.4545357438364 -68.8385803144821 1197552.43723469 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1963-Apr-23 08:19 00:03 Jupiter 1.90408460791723 1.90408390781653 1.90408530801783 1.77154083946642 1.49955558335722 2438142.846847142 3.00060093556007 146.47189466169 40.2166292007956 -46.3713739744213 1686468.46974978 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1974-Jun-13 03:32 00:02 Jupiter 1.89564470292312 1.8956439857719 1.89564542007703 2.64451270327007 2.46977657032965 2442211.647533759 1.98038564436564 479.656072401697 37.3717678487374 83.37062295399 2208236.53136782 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1985-Sep-12 15:55 00:01 Jupiter 1.88508751175612 1.88508688798504 1.8850881355272 3.86066183128141 3.74246628126546 2446321.162898023 1.14942302812115 143.475396138643 31.4976059610846 88.0386821306591 2252468.9172677 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
1997-Jan-03 20:58 < 00:01 Jupiter 1.91071794784652 1.91071741818263 1.91071847751041 4.70287002739468 4.60764421224684 2450452.373705194 0.643341818289123 103.688427860684 25.3002269172324 88.3684588089297 3159953.40342214 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2008-Apr-28 20:14 < 00:01 Jupiter 1.99367663271568 1.99367615890976 1.9936771065216 5.327232506487 5.2468749890989 2454585.342930758 0.320969701113853 77.9719959086648 21.967848535491 85.5650649204371 3873599.54049635 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2131-Nov-21 03:48 00:03 Jupiter 1.95075079190309 1.95074919384575 1.95075238997086 5.53890149875545 5.45994717248209 2499715.658398316 2.72666663911153 260.258309662685 31.7635489329985 74.1254231458365 3630515.31728102 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2143-Mar-14 00:14 00:03 Jupiter 1.82343551830276 1.82343457845074 1.82343645817065 5.05037497220877 4.95754446142136 2503846.509719804 2.91445340435642 337.668133881099 26.0054051487404 84.199231971465 3273856.85159136 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2154-Jul-13 17:09 00:03 Jupiter 1.78343843361805 1.78343785380105 1.78343901343648 4.41288410501184 4.30391337174885 2507986.214889578 3.30074156731077 363.503602818017 26.0953682729772 -87.5193940638696 2669533.62159546 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2165-Nov-05 08:41 00:04 Jupiter 1.81712730121271 1.81712618653285 1.81712841590621 3.51238942851938 3.37707181309781 2512118.861807438 4.15853719865138 309.869574163025 29.686115782123 -75.2952623314258 1746398.42654424 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2177-Jan-27 07:50 00:06 Jupiter 1.88421669946144 1.88421537513636 1.88421802379102 2.23465222866675 2.02351163818646 2516219.826722017 5.8377484457423 276.768889158218 66.5289113155379 -10.7647789889019 382139.532000479 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2188-Mar-10 20:47 00:07 Jupiter 1.92936845951844 1.92936763637507 1.92936928280099 2.09292302468193 1.87144220739358 2520280.366191149 6.76913170129976 1513.89832033688 40.966755292826 80.1396209028944 2114668.33927357 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22
2199-May-18 07:57 00:06 Jupiter 1.94843077636979 1.94843012629828 1.94843142644175 3.50690515036448 3.38067197857457 2524365.830931106 6.28186574100403 261.26591184185 37.0634068762134 81.6619112585763 673396.66039286 T 29 CATAB v2.0f-lin.ifort 2019-Sep-23 19:22:44 2019-Sep-23 19:22

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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