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 ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479601048418022 3.1595e-08  
a 2.47306566901766 7.4288e-09 au
q 2.107150613349145 7.9781e-08 au
i 13.4152256867194 3.7133e-06 deg
node 85.5508687549119 1.9575e-05 deg
peri 23.52282981764076 2.528e-05 deg
M 357.4051023431956 1.6297e-05 deg
tp 2459010.739285038261
(2020-Jun-10.23928504)		 6.4315e-05 TDB
period 1420.53487316078
3.89		 6.4007e-06
1.752e-08		 d
yr
n .2534256685997276 1.1419e-09 deg/d
Q 2.838980724686175 8.5279e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2596  
   data-arc span      37242 days (101.96 yr)  
   first obs. used      1918-11-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:04  

Additional Information
 Earth MOID = 1.13002 au 
 Jupiter MOID = 2.33869 au 
 T_jup = 3.430 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456568.5 (2013-Oct-03.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1468891823644173 3.1618e-08  
q 2.109885053541422 7.974e-08 au
tp 2456169.225853988981
(2012-Aug-29.72585399)		 6.3904e-05 TDB
node 85.6087212831972 1.9591e-05 deg
peri 23.46258047248759 2.5382e-05 deg
i 13.40866008875093 3.7114e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2596  
   data-arc span      37242 days (101.96 yr)  
   first obs. used      1918-11-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:04  

Additional Information
 Jupiter MOID = 2.33869 au 
 T_jup = 3.430 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.996908136875655E-16 -2.513595334926468E-15 1.527560811178158E-13 2.338422252157177E-15 4.53114252100964E-14 -1.017072897299698E-15
q -2.513595334926468E-15 6.358408899339677E-15 -3.856233157469235E-13 -4.882062175624315E-15 -1.137037914894828E-13 2.36878761461896E-15
tp 1.527560811178158E-13 -3.856233157469235E-13 4.083733436161532E-9 1.076032819214336E-11 1.057141401982938E-9 -7.719308119554836E-13
node 2.338422252157177E-15 -4.882062175624315E-15 1.076032819214336E-11 3.838061561988369E-10 -3.698718825247122E-10 -1.193612149132057E-11
peri 4.53114252100964E-14 -1.137037914894828E-13 1.057141401982938E-9 -3.698718825247122E-10 6.442434460490099E-10 1.139665645133813E-11
i -1.017072897299698E-15 2.36878761461896E-15 -7.719308119554836E-13 -1.193612149132057E-11 1.139665645133813E-11 1.377415445413525E-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. 2020-October); 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

[ 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
2127-Mar-17 09:37 < 00:01 Iris 0.0155012244763785 0.01549275563447 0.0155096940355016 6.76560002130365 6.76559996648849 2498005.900432296 0.980101958784264 454.062111157274 39.4563346826226 21.6617849676142 22201.0493359236 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:57:11 2020-Dec-18 01:57

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 2021-Jan-27 03:59 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin