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JPL Small-Body Database Browser
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112 Iphigenia
Classification: Main-belt Asteroid          SPK-ID: 2000112
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279647099642602 3.3504e-08  
a 2.433713637122669 4.8995e-09 au
q 2.122284177412202 8.1337e-08 au
i 2.599529246935791 3.6416e-06 deg
node 323.4077843499665 7.465e-05 deg
peri 17.31376537738434 7.5741e-05 deg
M 172.7400298228742 1.3095e-05 deg
tp 2458335.084167777441
(2018-Aug-04.58416778)
5.0085e-05 TDB
period 1386.764259828789
3.80
4.1877e-06
1.147e-08
d
yr
n .2595971142524584 7.8392e-10 deg/d
Q 2.745143096833137 5.5264e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3249  
   data-arc span      54558 days (149.37 yr)  
   first obs. used      1870-09-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45943  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:17:25  

Additional Information
 Earth MOID = 1.11381 au 
 Jupiter MOID = 2.61615 au 
 T_jup = 3.493 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455763.5 (2011-Jul-21.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291790942387012 3.3693e-08  
q 2.119702789902762 8.2071e-08 au
tp 2455560.954638518733
(2010-Dec-30.45463852)
4.8465e-05 TDB
node 323.5884513965111 7.4465e-05 deg
peri 17.03044709278134 7.553e-05 deg
i 2.603731177792751 3.6452e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3249  
   data-arc span      54558 days (149.37 yr)  
   first obs. used      1870-09-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45943  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:17:25  

Additional Information
 Jupiter MOID = 2.61615 au 
 T_jup = 3.493 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.135246484935799E-15 -2.761553320776256E-15 6.648723864943067E-14 8.831965110044422E-15 8.259227592978306E-15 1.560633732562434E-17
q -2.761553320776256E-15 6.735589663757608E-15 -1.629214102431356E-13 -2.146138808435433E-14 -2.09629502569573E-14 -6.230376205872622E-17
tp 6.648723864943067E-14 -1.629214102431356E-13 2.348839595247905E-9 -4.605301482823924E-12 6.245857800773493E-10 2.523638544879141E-13
node 8.831965110044422E-15 -2.146138808435433E-14 -4.605301482823924E-12 5.544982942637387E-9 -5.539813299365104E-9 2.927575592499629E-11
peri 8.259227592978306E-15 -2.09629502569573E-14 6.245857800773493E-10 -5.539813299365104E-9 5.704839552664622E-9 -2.917202309074075E-11
i 1.560633732562434E-17 -6.230376205872622E-17 2.523638544879141E-13 2.927575592499629E-11 -2.917202309074075E-11 1.328757390497924E-11

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 9.8   n/a MPO502153 IRAS observations used: 36
diameter diameter 69.818 km 1.818 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 31.466 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bull. 35, 71-72.]
[Cikota, S.; Cikota, A. (2010) Minor Planet Bull. 37, 107.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.042   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.696   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=18.12, mean=18.47, max.=18.81) deg.
U-B UB 0.284   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=18.12, mean=18.47, max.=18.81) deg.
Tholen spectral type spec_T DCX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
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)

112 Iphigenia          Discovered 1870-Sep-19 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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