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1388 Aphrodite (1935 SS)
Classification: Main-belt Asteroid          SPK-ID: 2001388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08971330205237922 2.9366e-08  
a 3.020244273919615 1.2462e-08 au
q 2.749288187101496 8.7885e-08 au
i 11.19057213310929 4.1722e-06 deg
node 54.36162268513966 1.7573e-05 deg
peri 257.2763850002059 3.0143e-05 deg
M 109.9720135379849 2.5209e-05 deg
tp 2458414.845873850733
(2018-Oct-23.34587385)
0.00013395 TDB
period 1917.174003010432
5.25
1.1865e-05
3.248e-08
d
yr
n .1877763830694094 1.1621e-09 deg/d
Q 3.291200360737735 1.358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2966  
   data-arc span      30998 days (84.87 yr)  
   first obs. used      1935-09-24  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:33:36  

Additional Information
 Earth MOID = 1.76271 au 
 Jupiter MOID = 1.94602 au 
 T_jup = 3.212 
[ 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 11.0   n/a MPO502166  
diameter diameter 21.355 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.9432 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J.; Krajewski, R. (2008) Minor Planet Bull. 35, 47-48.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.]
geometric albedo albedo 0.144   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.860   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.04 deg.
U-B UB 0.490   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.04 deg.

1388 Aphrodite (1935 SS)          Discovered 1935-Sep-24 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1941-Sep-25 23:22 00:01 Jupiter 1.94102670283831 1.94102634749135 1.94102705818549 4.03501437072395 3.9253768954416 2430263.473687542 1.30720796041406 71.649470110742 12.3370684209363 -81.0692827796189 3872177.34682025 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:33:47 2020-Aug-24 22:33
1988-Oct-05 14:25 < 00:01 Jupiter 1.95427888155238 1.95427852653219 1.95427923657267 4.31072330990538 4.20897808450658 2447440.100433218 0.46073962800324 60.5093450248643 13.8460201645995 -82.1823945996347 4057470.20674024 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:33:47 2020-Aug-24 22:33
2035-Oct-18 14:23 < 00:01 Jupiter 1.99632469145504 1.99632430284031 1.99632508006988 4.55822204236999 4.46416915803546 2464619.099113016 0.414295319578344 67.5085931930095 15.9730873981946 -83.120374592589 4087761.72779868 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:33:47 2020-Aug-24 22:33
2167-Jul-13 12:34 00:03 Jupiter 1.97851322839901 1.97851278828372 1.97851366851598 3.73499899386918 3.61856273310017 2512734.023865286 2.84160004114941 132.924441860412 11.5885192442761 -79.7429166821685 3562201.7728756 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:33:47 2020-Aug-24 22:33

Alternate Designations
 1935 SS = A914 TC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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