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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627921875280397 3.3336e-08  
a 2.443821925414801 8.9537e-09 au
q 2.04598680824754 8.0976e-08 au
i 3.424401689270054 3.7418e-06 deg
node 334.0169586188258 6.6176e-05 deg
peri 98.36418823879907 6.7823e-05 deg
M 40.44289252131701 1.2369e-05 deg
tp 2458843.737395384705
(2019-Dec-26.23739538)
4.8107e-05 TDB
period 1395.412992079142
3.82
7.6688e-06
2.1e-08
d
yr
n .2579881383099393 1.4178e-09 deg/d
Q 2.841657042582063 1.0411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1545  
   data-arc span      7984 days (21.86 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:40:50  

Additional Information
 Earth MOID = 1.06405 au 
 Jupiter MOID = 2.42915 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-August); 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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