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2373 Immo (1929 PC)
Classification: Main-belt Asteroid          SPK-ID: 2002373
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720652254614017 3.3354e-08  
a 2.796176054399763 1.1449e-08 au
q 2.315051391169695 9.3007e-08 au
i 10.08030409795631 4.028e-06 deg
node 146.3435580908385 1.9642e-05 deg
peri 216.2315107609995 2.236e-05 deg
M 120.7781425119049 1.0588e-05 deg
tp 2458427.531111964854
(2018-Nov-05.03111196)
4.9964e-05 TDB
period 1707.832190516765
4.68
1.0489e-05
2.872e-08
d
yr
n .2107935440021594 1.2946e-09 deg/d
Q 3.277300717629831 1.3419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2758  
   data-arc span      33138 days (90.73 yr)  
   first obs. used      1929-08-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:38:59  

Additional Information
 Earth MOID = 1.31977 au 
 Jupiter MOID = 2.18804 au 
 T_jup = 3.283 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707509266028172 3.3451e-08  
q 2.318138204632585 9.3176e-08 au
tp 2456711.395678577169
(2014-Feb-22.89567858)
5.1086e-05 TDB
node 146.4649929933091 1.9574e-05 deg
peri 214.7511599625056 2.2395e-05 deg
i 10.09409369959252 4.0365e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2758  
   data-arc span      33138 days (90.73 yr)  
   first obs. used      1929-08-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:38:59  

Additional Information
 Jupiter MOID = 2.18804 au 
 T_jup = 3.283 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.118957137296005E-15 -3.10118621277673E-15 -3.824814888083851E-13 1.74394147261858E-15 -8.525421733948487E-14 2.917685022201551E-16
q -3.10118621277673E-15 8.681821045744606E-15 1.015808850460377E-12 -5.018128765142443E-15 2.279492934804087E-13 -6.390229574001829E-16
tp -3.824814888083851E-13 1.015808850460377E-12 2.609771839148772E-9 -5.683311439519434E-12 5.687228564140064E-10 1.085423233187244E-12
node 1.74394147261858E-15 -5.018128765142443E-15 -5.683311439519434E-12 3.831545964870266E-10 -3.780331060166188E-10 -3.711439093755586E-12
peri -8.525421733948487E-14 2.279492934804087E-13 5.687228564140064E-10 -3.780331060166188E-10 5.015347874734232E-10 3.86745677242284E-12
i 2.917685022201551E-16 -6.390229574001829E-16 1.085423233187244E-12 -3.711439093755586E-12 3.86745677242284E-12 1.629313535050884E-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 12.4   n/a MPO452194  
diameter diameter 8.664 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.44 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Johnson, D.; Lin, W.; Wang, Z.; Zhao, B. (2019) Minor Planet Bull. 46, 280-282.]
geometric albedo albedo 0.236   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   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)

2373 Immo (1929 PC)          Discovered 1929-Aug-04 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1929 PC = 1929 PO = 1971 OJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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