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112 Iphigenia (A870 SA)
Classification: Main-belt Asteroid          SPK-ID: 2000112
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 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279647085308656 3.3209e-08  
a 2.433713637092985 4.8317e-09 au
q 2.122284180874788 8.0526e-08 au
i 2.5995293317042 3.6353e-06 deg
node 323.4077886593034 7.1392e-05 deg
peri 17.31376038982664 7.2453e-05 deg
M 172.7400304202704 1.2854e-05 deg
tp 2458335.084165488372
(2018-Aug-04.58416549)
4.9092e-05 TDB
period 1386.764259803417
3.80
4.1297e-06
1.131e-08
d
yr
n .2595971142572079 7.7307e-10 deg/d
Q 2.745143093311181 5.4499e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3542  
   data-arc span      54687 days (149.72 yr)  
   first obs. used      1870-09-21  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:07:22  

Additional Information
 Earth MOID = 1.11381 au 
 Jupiter MOID = 2.61615 au 
 T_jup = 3.493 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455950.5 (2012-Jan-24.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291816148237763 3.3381e-08  
q 2.118729150700018 8.1108e-08 au
tp 2455560.372233857063
(2010-Dec-29.87223386)
4.7227e-05 TDB
node 323.5561168245015 7.1218e-05 deg
peri 16.85413826940723 7.2256e-05 deg
i 2.60405885386335 3.6389e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3542  
   data-arc span      54687 days (149.72 yr)  
   first obs. used      1870-09-21  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:07:22  

Additional Information
 Jupiter MOID = 2.61615 au 
 T_jup = 3.493 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.114308802032551E-15 -2.703920731886415E-15 2.336483935038414E-14 7.253219868869288E-15 -3.710107781325744E-15 -5.673679950900642E-18
q -2.703920731886415E-15 6.578487160793461E-15 -4.914698235297423E-14 -1.766415199747122E-14 1.100957318998546E-14 5.102234595705331E-17
tp 2.336483935038414E-14 -4.914698235297423E-14 2.230412751225533E-9 -3.435515035485826E-12 5.867428037259118E-10 2.865702958609217E-13
node 7.253219868869288E-15 -1.766415199747122E-14 -3.435515035485826E-12 5.072030399613062E-9 -5.067058903807585E-9 2.590254902312204E-11
peri -3.710107781325744E-15 1.100957318998546E-14 5.867428037259118E-10 -5.067058903807585E-9 5.220903496718941E-9 -2.578917023387492E-11
i -5.673679950900642E-18 5.102234595705331E-17 2.865702958609217E-13 2.590254902312204E-11 -2.578917023387492E-11 1.324188852605511E-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 (A870 SA)          Discovered 1870-Sep-19 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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