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62 Erato (A860 RD)
Classification: Main-belt Asteroid          SPK-ID: 2000062
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676141981482891 1.0745e-08  
a 3.127991315699148 9.8305e-09 au
q 2.603695559503424 3.4796e-08 au
i 2.236614184384332 5.6698e-07 deg
node 125.1243347863698 1.3955e-05 deg
peri 277.2589696116537 1.3559e-05 deg
M 345.7520746579891 6.3753e-06 deg
tp 2459280.473456128578
(2021-Mar-06.97345613)
3.5742e-05 TDB
period 2020.676239887205
5.53
9.5257e-06
2.608e-08
d
yr
n .1781581793727111 8.3986e-10 deg/d
Q 3.652287071894873 1.1478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3778  
   data-arc span      42045 days (115.11 yr)  
   first obs. used      1906-01-24  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:14:16  

Additional Information
 Earth MOID = 1.61258 au 
 Jupiter MOID = 1.75784 au 
 T_jup = 3.191 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457315.5 (2015-Oct-20.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1710597049689762 1.0003e-08  
q 2.592381562579742 3.1297e-08 au
tp 2457238.636806873723
(2015-Aug-04.13680687)
3.4689e-05 TDB
node 125.5690294490492 1.399e-05 deg
peri 274.0758495768713 1.3526e-05 deg
i 2.230004520512758 5.6372e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3778  
   data-arc span      42045 days (115.11 yr)  
   first obs. used      1906-01-24  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:14:16  

Additional Information
 Jupiter MOID = 1.75784 au 
 T_jup = 3.191 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.00064407959949E-16 -3.038024908370808E-16 1.589602795521498E-13 -5.124728299976244E-14 8.619748954721152E-14 1.480528043223625E-15
q -3.038024908370808E-16 9.795257924656553E-16 -5.533391958303726E-13 1.518609807857454E-13 -2.745580506399115E-13 -4.283253564092561E-15
tp 1.589602795521498E-13 -5.533391958303726E-13 1.203323913225518E-9 1.489816944836056E-10 1.253088934618599E-10 -6.848328609443819E-12
node -5.124728299976244E-14 1.518609807857454E-13 1.489816944836056E-10 1.957109470689768E-10 -1.578311681144549E-10 -5.835753061302579E-12
peri 8.619748954721152E-14 -2.745580506399115E-13 1.253088934618599E-10 -1.578311681144549E-10 1.829586073794129E-10 4.156590366570917E-12
i 1.480528043223625E-15 -4.283253564092561E-15 -6.848328609443819E-12 -5.835753061302579E-12 4.156590366570917E-12 3.177828125773488E-13

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 8.81   n/a E2021B10 IRAS observations used: 15
diameter diameter 106.921 km 0.658 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.2213 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]
[Durkee, R.I. (2005) Minor Planet Bull. 32, 84.]
[Gonclaves, R.M.D.; Behrend, R. (2006) Minor Planet Bull. 33, 7.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.708   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=15.59, mean=16.44, max.=17.86) deg.
U-B UB 0.378   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=15.59, mean=16.44, max.=17.86) deg.
Tholen spectral type spec_T BU   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)

62 Erato (A860 RD)          Discovered 1860-Sep-14 by Lesser, O. and Forster, W. at Berlin
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A860 RD = 1935 FW = 1953 OS = 2002 JN104 = A906 BE = A907 GE = A910 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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