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 ]  
908 Buda (A918 WD)
Classification: Main-belt Asteroid          SPK-ID: 2000908
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479601035153642 3.1659e-08  
a 2.473065669343292 7.4463e-09 au
q 2.107150616906965 7.9963e-08 au
i 13.41522561979211 3.7195e-06 deg
node 85.55086894955474 1.9584e-05 deg
peri 23.52283001348696 2.5289e-05 deg
M 357.4051017346705 1.6316e-05 deg
tp 2459010.739287441481
(2020-Jun-10.23928744)
6.4389e-05 TDB
period 1420.534873441346
3.89
6.4157e-06
1.757e-08
d
yr
n .2534256685496743 1.1446e-09 deg/d
Q 2.838980721779618 8.548e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      37040 days (101.41 yr)  
   first obs. used      1918-11-30  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:15:19  

Additional Information
 Earth MOID = 1.13002 au 
 Jupiter MOID = 2.33869 au 
 T_jup = 3.430 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456554.5 (2013-Sep-19.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1468891780085416 3.1681e-08  
q 2.10986729710547 7.9918e-08 au
tp 2456169.215991180358
(2012-Aug-29.71599118)
6.3943e-05 TDB
node 85.60875452702923 1.96e-05 deg
peri 23.45914066697712 2.5392e-05 deg
i 13.40865123911366 3.7176e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      37040 days (101.41 yr)  
   first obs. used      1918-11-30  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:15:19  

Additional Information
 Jupiter MOID = 2.33869 au 
 T_jup = 3.430 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.003664823244791E-15 -2.524236622498672E-15 1.482906988825423E-13 2.345437254192035E-15 4.439631019821798E-14 -1.020850645858633E-15
q -2.524236622498672E-15 6.386913309131813E-15 -3.736209436500429E-13 -4.891314278890964E-15 -1.112507138590915E-13 2.375408805871288E-15
tp 1.482906988825423E-13 -3.736209436500429E-13 4.088730545889992E-9 1.087866409529406E-11 1.058062998594762E-9 -8.135091958036958E-13
node 2.345437254192035E-15 -4.891314278890964E-15 1.087866409529406E-11 3.841537210107713E-10 -3.701800525953215E-10 -1.206170735392256E-11
peri 4.439631019821798E-14 -1.112507138590915E-13 1.058062998594762E-9 -3.701800525953215E-10 6.447318539644172E-10 1.150822662821955E-11
i -1.020850645858633E-15 2.375408805871288E-15 -8.135091958036958E-13 -1.206170735392256E-11 1.150822662821955E-11 1.38204003102178E-11

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 10.8   n/a MPO502161 IRAS observations used: 8
diameter diameter 30.749 km 0.492 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.572 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Oey, J.; Williams, H.; Groom, R. (2017) Minor Planet Bull. 44, 200-204.]
geometric albedo albedo 0.087   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.820   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.45 deg.
U-B UB 0.350   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.45 deg.
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

908 Buda (A918 WD)          Discovered 1918-Nov-30 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A918 WD = 1963 ME 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-11 21:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin