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4791 Iphidamas (1988 PB1)
Classification: Jupiter Trojan          SPK-ID: 2004791
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04548190514753189 5.4818e-08  
a 5.159344784016665 9.6108e-08 au
q 4.924687953926606 2.5889e-07 au
i 25.97018003235019 5.5282e-06 deg
node 261.4639130004819 1.4136e-05 deg
peri 165.4152680780167 8.183e-05 deg
M 125.995675183784 7.8292e-05 deg
tp 2457102.391074480894
(2015-Mar-20.89107448)
0.00092698 TDB
period 4280.458137949563
11.72
0.0001196
3.274e-07
d
yr
n .08410314699922475 2.35e-09 deg/d
Q 5.394001614106724 1.0048e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1400  
   data-arc span      11225 days (30.73 yr)  
   first obs. used      1988-08-13  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45459  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:42:06  

Additional Information
 Earth MOID = 3.94331 au 
 Jupiter MOID = .0979362 au 
 T_jup = 2.797 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1   n/a MPO439110  
diameter diameter 49.528 km 0.657 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 9.696 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bull. 42, 216-224.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 265-270.]
geometric albedo albedo 0.079   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4791 Iphidamas (1988 PB1)          Discovered 1988-Aug-14 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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