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JPL Small-Body Database Browser
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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 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279647081933133 3.3232e-08  
a 2.433713637198108 4.845e-09 au
q 2.122284181787965 8.0595e-08 au
i 2.599529335695551 3.6356e-06 deg
node 323.4077880506476 7.2029e-05 deg
peri 17.31376056825068 7.3098e-05 deg
M 172.7400307301637 1.2905e-05 deg
tp 2458335.084164251512
(2018-Aug-04.58416425)
4.9301e-05 TDB
period 1386.764259893268
3.80
4.1411e-06
1.134e-08
d
yr
n .2595971142403881 7.752e-10 deg/d
Q 2.745143092608251 5.465e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3444  
   data-arc span      54641 days (149.60 yr)  
   first obs. used      1870-09-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44832  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:58:46  

Additional Information
 Earth MOID = 1.11381 au 
 Jupiter MOID = 2.61615 au 
 T_jup = 3.493 
[ 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 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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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