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1811 Bruwer (4576 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102518736069067 1.3629e-08  
a 3.14053875257098 1.1156e-08 au
q 2.794288470964932 4.4017e-08 au
i 8.525281059446177 6.7604e-07 deg
node 167.7810136258462 1.9327e-06 deg
peri 137.0038852237911 1.2418e-05 deg
M 14.36788465566956 9.334e-06 deg
tp 2459315.367474665316
(2021-Apr-10.86747467)
5.2673e-05 TDB
period 2032.846853970317
5.57
1.0832e-05
2.966e-08
d
yr
n .1770915498611665 9.4362e-10 deg/d
Q 3.486789034177028 1.2386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3327  
   data-arc span      32954 days (90.22 yr)  
   first obs. used      1931-05-19  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42488  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:05:37  

Additional Information
 Earth MOID = 1.78664 au 
 Jupiter MOID = 1.823 au 
 T_jup = 3.184 
[ 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 11.01   n/a E2021B10  
diameter diameter 28.072 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 17.565 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2011) Minor Planet Bull. 38, 73-74.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.074   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1811 Bruwer (4576 P-L)          Discovered 1960-Sep-24 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
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
1906-Mar-17 04:12 00:02 Jupiter 1.83118802882681 1.83118783505858 1.83118822259516 2.5831662064782 2.39742373470947 2417286.675006612 1.96675546713467 56.565847372151 4.33272109177976 70.9507710898191 7409215.87950227 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
1916-Aug-08 18:57 00:02 Jupiter 1.91240011720051 1.91239970247405 1.9124005319286 4.04351241886436 3.93245104779398 2421084.289426110 1.64333743698054 109.484853159124 9.6901441973148 -83.1990643674758 7158174.44295321 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
1979-Nov-07 09:23 < 00:01 Jupiter 1.99525833264158 1.99525806492179 1.9952586003616 3.33090241789164 3.20091791281614 2444184.891311980 0.61714907404241 39.6035119153765 5.29293594117183 -76.8906815611256 13089013.0419715 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
1990-Apr-07 06:42 < 00:01 Jupiter 1.85591963793259 1.85591949255075 1.85591978331444 2.37995081783292 2.17976755604341 2447988.778988206 0.478699415442122 11.1486738208123 1.60813566658216 89.9664747188795 9031233.52696482 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2000-Aug-10 05:28 < 00:01 Jupiter 1.84874118110298 1.84874095641358 1.84874140579239 3.04214100102752 2.88761118443957 2451766.727829885 0.286477835507035 14.0377391801621 7.46823256591702 -88.1951956745459 7051536.37996583 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2011-Jan-17 16:06 < 00:01 Jupiter 1.99006294930504 1.99006271691906 1.99006318169101 4.56171180493417 4.4674335600113 2455579.170709925 0.112424942628876 11.1574906344888 6.42498103766001 -27.441850765202 8055808.90146559 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2074-Apr-14 01:10 < 00:01 Jupiter 1.92820323110717 1.92820301224499 1.92820344996968 2.97835990404693 2.82702427833468 2478676.548770231 0.972638991552347 51.8725576890994 4.28244084551516 -85.1790977848546 13235802.0396869 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2084-Aug-30 04:40 00:01 Jupiter 1.85057643856635 1.85057627768251 1.85057659945008 2.389869121488 2.18999078501463 2482467.694619695 1.2484236915721 14.5005833720955 2.01658696121131 74.6219387432722 7709418.47587676 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2095-Jan-10 00:00 00:01 Jupiter 1.89910124361503 1.89910090098607 1.89910158624465 3.62023784400002 3.49486730073242 2486252.499692864 1.36042254749425 78.6328662663883 8.93680305781035 -85.0331590535909 7052471.62306741 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2168-Sep-15 08:06 00:03 Jupiter 1.87728347966178 1.87728320847589 1.87728375084917 2.66704716570701 2.49213741365625 2513163.837485330 2.62303616483242 94.8598075062934 3.04620910591271 88.2987581591632 11420554.5287472 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2179-Jan-23 08:42 00:03 Jupiter 1.86130131886149 1.86130103874056 1.86130159898295 2.65397192645387 2.47657563129232 2516945.862844960 2.93123686543889 84.7466325555341 4.9447668227112 80.8343580605454 6901439.85331352 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07
2189-Jun-17 19:57 00:03 Jupiter 1.9572624477532 1.95726175617381 1.9572631393387 4.19419538603248 4.08971360538484 2520744.331194529 2.88211984340261 187.567952093895 9.50660726926281 -82.3402666215807 7431965.48583149 T 42 CATAB v2.0g-lin.ifort 2021-Aug-25 08:07:46 2021-Aug-25 08:07

Alternate Designations
 4576 P-L = 1931 KM = 1948 MJ = 1965 RA = 1970 KJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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