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 ]  
238 Hypatia (A884 NA)
Classification: Main-belt Asteroid          SPK-ID: 2000238
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 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08980097408303239 3.2344e-08  
a 2.90714250984545 9.4574e-09 au
q 2.646078280663137 9.621e-08 au
i 12.4110646255793 3.4227e-06 deg
node 183.8674081776036 1.8712e-05 deg
peri 210.6704863652902 2.8775e-05 deg
M 88.52900240603235 2.1804e-05 deg
tp 2458555.273527454097
(2019-Mar-12.77352745)
0.0001095 TDB
period 1810.497416218526
4.96
8.8347e-06
2.419e-08
d
yr
n .1988403831870193 9.7029e-10 deg/d
Q 3.168206739027763 1.0307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2984  
   data-arc span      46978 days (128.62 yr)  
   first obs. used      1892-03-18  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:52  

Additional Information
 Earth MOID = 1.65802 au 
 Jupiter MOID = 2.27695 au 
 T_jup = 3.244 
[ 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 8.1   n/a MPO502155 IRAS observations used: 17
diameter diameter 155.659 km 0.751 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.8749 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1983) Astron. Astrophys. 117, 362-364.]
[Lagerkvist, C.-I.; Magnusson, P.; Debehogne, H.; Hoffmann, M.; et al. (1992) Astron. Astrophys. Suppl. Ser. 95, 461-470.]
[Shevchenko, V.G.; Chiornij, V.G.; Krugly, Yu.N.; Lupishko, D.F.; et al. (1992) Icarus 100, 295-306.]
[Riccioli, D.; Blanco, C.; Di Martino, M.; De Sanctis, G. (1995) Astron. Astrophys. Suppl. Ser. 111, 297-303.]
[Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; et al. (1998) Astron. Astrophys. Suppl. Ser. 128, 525-540.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Aznar Macias, A. (2016) Minor Planet Bull. 43, 350-353]
geometric albedo albedo 0.039   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.739   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.66, mean=13.76, max.=18.19) deg.
U-B UB 0.383   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.66, mean=13.04, max.=18.19) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

238 Hypatia (A884 NA)          Discovered 1884-Jul-01 by Knorre, V. at Berlin
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
2194-May-10 04:30 < 00:01 Hygie 0.0473567818091807 0.0473454253742093 0.0473681386026234 5.27719250049307 5.27719234589028 2522531.687583027 0.355506460253954 602.005934826621 32.8737610607565 20.0110870054529 74488.7321040925 T 87 CATAB v2.0f-lin.ifort 2020-Nov-13 04:32:00 2020-Nov-13 04:32

Alternate Designations
 A884 NA = 1947 HA 
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-24 22:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin