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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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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08971330206699593 2.9272e-08  
a 3.020244273994403 1.2334e-08 au
q 2.749288187125428 8.7453e-08 au
i 11.1905720988134 4.1025e-06 deg
node 54.36162278265287 1.7272e-05 deg
peri 257.2763846190122 2.9587e-05 deg
M 109.9720137976911 2.4868e-05 deg
tp 2458414.845872445920
(2018-Oct-23.34587245)
0.00013204 TDB
period 1917.174003081642
5.25
1.1744e-05
3.215e-08
d
yr
n .1877763830624348 1.1503e-09 deg/d
Q 3.291200360863378 1.3441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3073  
   data-arc span      31084 days (85.10 yr)  
   first obs. used      1935-09-24  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:19:29  

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