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 ]  
462 Eriphyla (A900 UJ)
Classification: Main-belt Asteroid          SPK-ID: 2000462
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08836066537526903 2.2359e-08  
a 2.872044770259992 1.0122e-08 au
q 2.618268983372257 6.8536e-08 au
i 3.192702451186079 7.8417e-07 deg
node 105.2762910227383 1.8862e-05 deg
peri 250.9706331331108 1.8737e-05 deg
M 265.1464120878974 1.0453e-05 deg
tp 2459668.921151617369
(2022-Mar-30.42115162)
5.2541e-05 TDB
period 1777.809551479674
4.87
9.3983e-06
2.573e-08
d
yr
n .2024963808414526 1.0705e-09 deg/d
Q 3.125820557147727 1.1016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3138  
   data-arc span      43961 days (120.36 yr)  
   first obs. used      1900-10-23  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:13:35  

Additional Information
 Earth MOID = 1.61409 au 
 Jupiter MOID = 2.26803 au 
 T_jup = 3.289 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456615.5 (2013-Nov-19.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08543819446577092 2.2267e-08  
q 2.631230048351924 6.8272e-08 au
tp 2456116.381743029696
(2012-Jul-07.88174303)
5.0605e-05 TDB
node 105.2927812595536 1.8836e-05 deg
peri 252.1161156330272 1.8845e-05 deg
i 3.192734643108824 7.8525e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3138  
   data-arc span      43961 days (120.36 yr)  
   first obs. used      1900-10-23  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:13:35  

Additional Information
 Jupiter MOID = 2.26803 au 
 T_jup = 3.289 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.958296460436617E-16 -1.508131508476435E-15 -6.134122652973624E-13 3.2312180231913E-14 -1.24280051418255E-13 -1.548842091449253E-15
q -1.508131508476435E-15 4.661004346349285E-15 1.772307035432678E-12 -8.957367302293798E-14 3.607252266241703E-13 4.631419365596101E-15
tp -6.134122652973624E-13 1.772307035432678E-12 2.560872851846685E-9 1.969681579202161E-10 2.435945794582447E-10 8.361831139865258E-14
node 3.2312180231913E-14 -8.957367302293798E-14 1.969681579202161E-10 3.548053084211329E-10 -3.160652771098068E-10 -6.361365018652314E-12
peri -1.24280051418255E-13 3.607252266241703E-13 2.435945794582447E-10 -3.160652771098068E-10 3.551466566400594E-10 6.313997929640011E-12
i -1.548842091449253E-15 4.631419365596101E-15 8.361831139865258E-14 -6.361365018652314E-12 6.313997929640011E-12 6.166161180795361E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.41   n/a E2021B10 IRAS observations used: 8
diameter diameter 34.274 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.659 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Slivan, S.M.; Binzel, R.P. (1996) Icarus 124, 452-470.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Slivan, S.M.; Binzel, R.P.; Kaasalianen, M.; Hock, A.N.; et al. (2009) Icarus 200, 514-530.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.259   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.834   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.13, mean=10.58, max.=15.66) deg.
U-B UB 0.421   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.13, mean=9.81, max.=15.66) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

462 Eriphyla (A900 UJ)          Discovered 1900-Oct-22 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A900 UJ = 1927 CP = 1946 DB = 1948 OG = 1951 EA3 = 1957 KB = 1958 RR = 1959 WB = A896 YA = A907 BB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-12 04:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin