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1899 Crommelin (1971 UR1)
Classification: Main-belt Asteroid          SPK-ID: 2001899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056979121566493 1.5809e-08  
a 2.26485062928991 6.0209e-09 au
q 2.025460646427293 3.6277e-08 au
i 7.275843869886817 7.1992e-07 deg
node 52.12073132504234 6.032e-06 deg
peri 128.201065692713 1.0403e-05 deg
M 74.30196124990819 9.2742e-06 deg
tp 2459139.545900578540
(2020-Oct-17.04590058)
3.1617e-05 TDB
period 1244.966811583859
3.41
4.9645e-06
1.359e-08
d
yr
n .2891643348644808 1.1531e-09 deg/d
Q 2.504240612152527 6.6573e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3613  
   data-arc span      26429 days (72.36 yr)  
   first obs. used      1949-03-31  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36219  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:10:38  

Additional Information
 Earth MOID = 1.03685 au 
 Jupiter MOID = 2.46261 au 
 T_jup = 3.599 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.06   n/a MPO636090  
diameter diameter 5.332 km 0.585 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.0393 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.122   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1899 Crommelin (1971 UR1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1971 UR1 = 1949 FU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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