Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091247357601794 3.2315e-08  
a 3.136051341228232 1.3183e-08 au
q 2.793830567286344 1.0697e-07 au
i 8.519269398448971 3.8188e-06 deg
node 167.8426362998768 2.6054e-05 deg
peri 137.5182449119928 3.3218e-05 deg
M 303.6528169122537 2.0704e-05 deg
tp 2459317.999380178115
(2021-Apr-13.49938018)
0.00011691 TDB
period 2028.491409874541
5.55
1.2791e-05
3.502e-08
d
yr
n .1774717892555756 1.1191e-09 deg/d
Q 3.478272115170119 1.4622e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3008  
   data-arc span      32658 days (89.41 yr)  
   first obs. used      1931-05-19  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:14  

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 1.83118835312509 1.83118794668099 1.83118875956909 2.58316909446538 2.3974268795485 2417286.674014970 2.20286256879719 71.780082954211 9.73816739634924 72.9659533918867 2468260.52415342 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
1916-Aug-08 18:56 00:02 Jupiter 1.91240035289348 1.91239980884943 1.91240089693883 4.04351506159608 3.93245377842119 2421084.288625904 1.82706128822484 122.967033377462 17.4803551993061 -83.6779908165691 3528210.51529671 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
1979-Nov-07 09:23 < 00:01 Jupiter 1.99525850209083 1.99525810533693 1.99525889884473 3.3309042420538 3.2009198215853 2444184.891114142 0.68600892323934 58.0194884364137 15.5235734195339 -87.0409704909672 3741993.5490689 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
1990-Apr-07 06:42 < 00:01 Jupiter 1.85592002130332 1.85591961643108 1.85592042617555 2.37995273408681 2.17976969037332 2447988.778956334 0.517305547156108 40.7126796607184 11.5812275816577 73.1704396248803 3652090.83487921 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2000-Aug-10 05:28 < 00:01 Jupiter 1.84874139429084 1.84874098633446 1.84874180224712 3.04214127310981 2.8876114885022 2451766.727903170 0.307845529243969 33.8246527446666 13.9854829292574 80.7829482274561 3018806.53730594 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2011-Jan-17 16:06 < 00:01 Jupiter 1.99006271062367 1.99006232532657 1.99006309592077 4.56171141710026 4.46743315203972 2455579.170836715 0.177609892960994 29.7211264325026 17.4359406221311 -89.3021365550067 4200077.35332076 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2074-Apr-14 01:10 00:01 Jupiter 1.92820362678722 1.92820315718511 1.92820409638944 2.97836269100412 2.82702724551033 2478676.548888190 1.15310448235128 75.4859981757446 15.6238452476865 -87.2142229400764 3129596.87810627 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2084-Aug-30 04:41 00:02 Jupiter 1.85057678811294 1.85057636573519 1.85057721049068 2.38987020395547 2.18999200460016 2482467.694798276 1.49263138599504 39.2810064259566 6.54988009651363 69.6422270660449 3563168.02108713 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2095-Jan-10 00:00 00:02 Jupiter 1.89910122884827 1.89910074761866 1.89910171007831 3.62023702288746 3.49486644846695 2486252.499840180 1.63346088677015 99.1240485106327 16.8939641185101 -86.8349833426909 3135087.85902768 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2168-Sep-15 08:07 00:03 Jupiter 1.87728394631536 1.8772833966454 1.87728449598607 2.66705084555153 2.49214139577336 2513163.838293225 3.05244856210771 121.282287725019 14.9580874300133 88.4425002522984 2842300.01066736 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2179-Jan-23 08:44 00:03 Jupiter 1.86130152503491 1.86130108133953 1.86130196873019 2.65397065670896 2.47657428993453 2516945.863720370 3.42791668185312 103.886654629134 9.89203720939955 79.0919142938291 2783699.69477601 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15
2189-Jun-17 19:58 00:03 Jupiter 1.95726211003757 1.95726124635412 1.95726297372848 4.19419242030942 4.08971054505238 2520744.332000853 3.3764979543089 222.686334361809 17.7100858315847 -82.4561634174867 3702609.77759831 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:22 2020-Nov-13 04:15

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-30 02:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin