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JPL Small-Body Database Browser
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39991 Iochroma (1998 HR37)
Classification: Main-belt Asteroid          SPK-ID: 2039991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1626305066064095 3.3555e-08  
a 2.443337769272708 9.2175e-09 au
q 2.045976510045313 8.1723e-08 au
i 3.424412164851331 4.0453e-06 deg
node 334.0246836314919 6.7923e-05 deg
peri 98.42092979272356 6.9584e-05 deg
M 297.1817130638796 1.3046e-05 deg
tp 2458843.920571457061
(2019-Dec-26.42057146)
5.0377e-05 TDB
period 1394.998335654297
3.82
7.8939e-06
2.161e-08
d
yr
n .2580648240208466 1.4603e-09 deg/d
Q 2.840699028500103 1.0717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1464  
   data-arc span      7924 days (21.69 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49874  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:12:27  

Additional Information
 Earth MOID = 1.06386 au 
 Jupiter MOID = 2.43024 au 
 T_jup = 3.479 
[ 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 14.5   n/a MPO452723  
rotation period rot_per 3.440 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Fatka, P.; Vokrouhlicky, D.; Scheeres, D.J.; et al. (2018) Icarus 304, 110-126.]

39991 Iochroma           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Named for a genus of shrubs and small trees found in the forests of South America. Their hummingbird-pollinated flowers are tubular or trumpet-shaped. Iochromas are often cultivated as flowering ornamentals.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-01-12Last Updated: 2017-01-17

[ show close-approach data ]
Alternate Designations
 1998 HR37 = 1999 LO34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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