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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091247365085411 3.2373e-08  
a 3.136051341811382 1.3248e-08 au
q 2.793830565458959 1.0709e-07 au
i 8.519269349592843 3.909e-06 deg
node 167.8426361587136 2.6104e-05 deg
peri 137.5182463194685 3.3357e-05 deg
M 303.6528153907886 2.0946e-05 deg
tp 2459317.999388839671
(2021-Apr-13.49938884)
0.0001183 TDB
period 2028.49141044034
5.55
1.2854e-05
3.519e-08
d
yr
n .1774717892060741 1.1245e-09 deg/d
Q 3.478272118163806 1.4693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2909  
   data-arc span      32584 days (89.21 yr)  
   first obs. used      1931-05-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44071  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:41:14  

Additional Information
 Earth MOID = 1.78665 au 
 Jupiter MOID = 1.83363 au 
 T_jup = 3.186 
[ 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 10.9   n/a MPO263361  
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. 2019-August); 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 04:11 00:02 Jupiter 1.83118835557258 1.83118794506893 1.83118876607623 2.58316912141521 2.39742690884416 2417286.673993099 2.2191608459621 72.6063282330699 9.75170411974537 73.0250132772844 2435824.1518414 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
1916-Aug-08 18:56 00:02 Jupiter 1.9124003684259 1.91239981590104 1.91240092095206 4.04351515823685 3.93245387870609 2421084.288600902 1.83995928819041 123.904899987362 17.622104715928 -83.5551782839882 3473478.5807455 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
1979-Nov-07 09:23 < 00:01 Jupiter 1.99525849194639 1.9952580900066 1.99525889388618 3.33090420915883 3.20091978668022 2444184.891107682 0.690242093653197 58.6596124612583 15.6699227221575 -86.8743368117508 3680446.616069 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
1990-Apr-07 06:42 < 00:01 Jupiter 1.85592001922114 1.85591961019845 1.85592042824383 2.37995273544911 2.17976969162584 2447988.778952511 0.520309254822869 41.6349937940194 11.5887099611929 73.1494335572369 3646477.90454492 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2000-Aug-10 05:28 < 00:01 Jupiter 1.84874139978892 1.84874098804955 1.84874181152829 3.04214127900498 2.88761149518471 2451766.727904174 0.308967873155366 34.4556267688385 14.0534074402317 80.8442456711503 2992265.60546657 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2011-Jan-17 16:06 < 00:01 Jupiter 1.99006271713498 1.99006232953664 1.99006310473333 4.56171139977246 4.46743313465797 2455579.170843381 0.177873862688278 29.7443563285672 17.5392260343654 -89.4161060426967 4152052.14667693 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2074-Apr-14 01:10 00:01 Jupiter 1.92820362661752 1.92820315595432 1.92820409728083 2.97836267532427 2.82702722897744 2478676.548899902 1.16258008053514 76.1482398515311 15.6709705684103 -87.3390949204896 3086689.48188335 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2084-Aug-30 04:41 00:02 Jupiter 1.85057679025266 1.85057636320276 1.85057721730256 2.38987020644889 2.1899920075628 2482467.694820292 1.50435649262335 40.1048446032346 6.55942282006847 69.5613447588474 3558743.7932648 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2095-Jan-10 00:00 00:02 Jupiter 1.89910123056485 1.8991007485364 1.89910171259374 3.62023697683413 3.49486640087691 2486252.499864055 1.6467889751407 99.8843770623934 17.0031301987135 -86.9754769840647 3092164.31909563 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2168-Sep-15 08:07 00:03 Jupiter 1.8772839502939 1.87728339800493 1.87728450258362 2.66705088991551 2.4921414436347 2513163.838331772 3.076427094115 122.282133574846 15.0003038711811 88.3934560355349 2796162.7060298 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2179-Jan-23 08:44 00:03 Jupiter 1.86130152592407 1.86130107883326 1.86130197301477 2.65397058782356 2.47657421620267 2516945.863767438 3.45470244113335 104.787319516877 9.96551273720172 79.0156754609092 2752617.48838558 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41
2189-Jun-17 19:58 00:03 Jupiter 1.95726210337057 1.95726123846284 1.95726296828586 4.1941923627775 4.08971048569022 2520744.332041497 3.40361839308325 224.3798736594 17.8483767019612 -82.5260725811363 3648890.91870783 T 35 CATAB v2.0f-lin.ifort 2020-Aug-24 22:41:30 2020-Aug-24 22:41

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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