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

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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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08829443512414184 4.8482e-08  
a 2.871683444778766 1.1437e-08 au
q 2.618129777166675 1.3833e-07 au
i 3.192703821225582 4.2891e-06 deg
node 105.2764146399814 8.7059e-05 deg
peri 251.0849356827558 9.035e-05 deg
M 224.5119951855254 2.5011e-05 deg
tp 2459669.462264386432
0.00012422 TDB
period 1777.47406871097
n .2025346002718753 1.21e-09 deg/d
Q 3.125237112390857 1.2447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2711  
   data-arc span      43567 days (119.28 yr)  
   first obs. used      1900-10-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46635  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:51  

Additional Information
 Earth MOID = 1.61569 au 
 Jupiter MOID = 2.2694 au 
 T_jup = 3.290 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.4   n/a MPO473767 IRAS observations used: 8
diameter diameter 34.274 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.659 h n/a LCDB (Rev. 2019-August); 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,]
[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.]
geometric albedo albedo 0.259   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
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 ]
FirstGov 2020-Mar-29 09:25 UT
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